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3. Number Series / संख्या श्रृंखला Test 20
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3. Number Series / संख्या श्रृंखला Test 20

Bilingual timed test with clean Hindi, preserved math symbols and detailed solutions.

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3. Number Series / संख्या श्रृंखला Test 20

25 bilingual MCQs from 3. Number Series / संख्या श्रृंखला, including 5 fresh LearnAtMyPlace original supplemental questions with detailed solutions. Symbols, Hindi text and equations are displayed with extra wrapping for mobile readability.

Questions
25
Duration
25 min
Marking
+1 / -0.25
Sections
3. Number Series / संख्या श्रृंखला | 25 questions

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Preview all 25 questions in 3. Number Series / संख्या श्रृंखला Test 20 (no login required)
  1. 3. Number Series / संख्या श्रृंखला — Number Series

    1. Find the next term: 5, 6, 8, 11, 15, 20, ? / अगला पद: 5, 6, 8, 11, 15, 20, ?

    • A. 24
    • B. 25
    • C. 26 (Correct)
    • D. 27

    Explanation: Diff: 1,2,3,4,5,6. 20+6=26. / 20+6=26।

  2. 3. Number Series / संख्या श्रृंखला — Number Series

    2. Find the next term: 16, 4, 1, 1/4, ? / अगला पद: 16, 4, 1, 1/4, ?

    • A. 1/8
    • B. 1/12
    • C. 1/16 (Correct)
    • D. 1/20

    Explanation: GP r=1/4. (1/4)÷4=1/16. / ÷4=1/16।

  3. 3. Number Series / संख्या श्रृंखला — Number Series

    3. Find the next term: 3, 6, 11, 18, 27, 38, ? / अगला पद: 3, 6, 11, 18, 27, 38, ?

    • A. 49
    • B. 51 (Correct)
    • C. 52
    • D. 54

    Explanation: Diff: 3,5,7,9,11,13. 38+13=51. / 38+13=51।

  4. 3. Number Series / संख्या श्रृंखला — Number Series

    4. Find the next term: 100, 98, 94, 88, 80, ? / अगला पद: 100, 98, 94, 88, 80, ?

    • A. 68
    • B. 70 (Correct)
    • C. 72
    • D. 74

    Explanation: Diff: −2,−4,−6,−8,−10. 80−10=70. / 80−10=70।

  5. 3. Number Series / संख्या श्रृंखला — Number Series

    5. Find the next: 1, 4, 13, 40, 121, ? / अगला पद: 1, 4, 13, 40, 121, ?

    • A. 340
    • B. 364 (Correct)
    • C. 366
    • D. 370

    Explanation: ×3+1: 121×3+1=364. / ×3+1=364।

  6. 3. Number Series / संख्या श्रृंखला — Number Series

    6. Find the next term: 2, 7, 17, 37, 77, ? / अगला पद: 2, 7, 17, 37, 77, ?

    • A. 147
    • B. 153
    • C. 157 (Correct)
    • D. 167

    Explanation: ×2+3: 77×2+3=157. / ×2+3=157।

  7. 3. Number Series / संख्या श्रृंखला — Number Series

    7. Find the next term: 8, 9, 11, 14, 18, 23, ? / अगला पद: 8, 9, 11, 14, 18, 23, ?

    • A. 26
    • B. 28
    • C. 29 (Correct)
    • D. 30

    Explanation: Diff: 1,2,3,4,5,6. 23+6=29. / 23+6=29।

  8. 3. Number Series / संख्या श्रृंखला — Number Series

    8. Find the next term: 144, 121, 100, 81, 64, ? / अगला पद: 144, 121, 100, 81, 64, ?

    • A. 36
    • B. 49 (Correct)
    • C. 50
    • D. 54

    Explanation: Descending perfect squares: 8²=64, 7²=49. / 7²=49।

  9. 3. Number Series / संख्या श्रृंखला — Number Series

    9. Find the 8th term of the series 3, 6, 12, 24, ... / श्रृंखला 3, 6, 12, 24, ... का 8वाँ पद ज्ञात कीजिए।

    • A. 256
    • B. 348
    • C. 384 (Correct)
    • D. 412

    Explanation: GP r=2. T₈=3×2⁷=384. / 3×128=384।

  10. 3. Number Series / संख्या श्रृंखला — Number Series

    10. Find the next term: 1, 2, 5, 14, 41, ? / अगला पद: 1, 2, 5, 14, 41, ?

    • A. 108
    • B. 120
    • C. 122 (Correct)
    • D. 126

    Explanation: ×3−1: 41×3−1=122. / ×3−1=122।

  11. 3. Number Series / संख्या श्रृंखला — Number Series

    11. Find the next term: 4, 5, 8, 13, 20, 29, ? / अगला पद: 4, 5, 8, 13, 20, 29, ?

    • A. 38
    • B. 40 (Correct)
    • C. 42
    • D. 44

    Explanation: Diff: 1,3,5,7,9,11. 29+11=40. / 29+11=40।

  12. 3. Number Series / संख्या श्रृंखला — Number Series

    12. Find the missing term: 2, ?, 8, 16, 32, 64 / लुप्त पद: 2, ?, 8, 16, 32, 64

    • A. 3
    • B. 4 (Correct)
    • C. 5
    • D. 6

    Explanation: GP r=2: 2×2=4. / ×2=4।

  13. 3. Number Series / संख्या श्रृंखला — Number Series

    13. Find the next term: 13, 14, 16, 20, 28, ? / अगला पद: 13, 14, 16, 20, 28, ?

    • A. 40
    • B. 44 (Correct)
    • C. 48
    • D. 52

    Explanation: Diff: 1,2,4,8,16. 28+16=44. / 28+16=44।

  14. 3. Number Series / संख्या श्रृंखला — Number Series

    14. Find the next term: 3, 8, 6, 11, 9, 14, 12, ? / अगला पद: 3, 8, 6, 11, 9, 14, 12, ?

    • A. 15
    • B. 17 (Correct)
    • C. 18
    • D. 19

    Explanation: Two interleaved APs: +3 and +3. Odd: 3,6,9,12,+3=15. Even: 8,11,14,+3=17. Next is even position: 17. / Even position: 17।

  15. 3. Number Series / संख्या श्रृंखला — Number Series

    15. Find the next term: 1, 3, 7, 15, 31, 63, ? / अगला पद: 1, 3, 7, 15, 31, 63, ?

    • A. 112
    • B. 126
    • C. 127 (Correct)
    • D. 130

    Explanation: ×2+1: 63×2+1=127. / ×2+1=127।

  16. 3. Number Series / संख्या श्रृंखला — Number Series

    16. Which term is wrong? 2, 4, 6, 8, 10, 13, 14 / गलत पद: 2, 4, 6, 8, 10, 13, 14

    • A. 10
    • B. 13 (Correct)
    • C. 14
    • D. 4

    Explanation: AP d=2: 10+2=12≠13. Wrong=13. / 12 होना चाहिए।

  17. 3. Number Series / संख्या श्रृंखला — Number Series

    17. Find the next term: 6, 13, 25, 51, 101, ? / अगला पद: 6, 13, 25, 51, 101, ?

    • A. 196
    • B. 201
    • C. 203 (Correct)
    • D. 208

    Explanation: ×2+1: 101×2+1=203. / ×2+1=203।

  18. 3. Number Series / संख्या श्रृंखला — Number Series

    18. Find the next term: 17, 17, 34, 102, 408, ? / अगला पद: 17, 17, 34, 102, 408, ?

    • A. 1224
    • B. 2040 (Correct)
    • C. 2448
    • D. 4080

    Explanation: ×1,×2,×3,×4,×5: 408×5=2040. / ×5=2040।

  19. 3. Number Series / संख्या श्रृंखला — Number Series

    19. Find the next term: 5, 10, 13, 26, 29, 58, 61, ? / अगला पद: 5, 10, 13, 26, 29, 58, 61, ?

    • A. 112
    • B. 118
    • C. 122 (Correct)
    • D. 124

    Explanation: Alt ×2, +3: 61×2=122. / ×2=122।

  20. 3. Number Series / संख्या श्रृंखला — Number Series

    20. Find the next term: 2, 12, 36, 80, 150, ? / अगला पद: 2, 12, 36, 80, 150, ?

    • A. 240
    • B. 252 (Correct)
    • C. 256
    • D. 270

    Explanation: n²(n+1): 6²×7=252. / n²(n+1)=252।

  21. 3. Number Series / संख्या श्रृंखला — Percentage / प्रतिशत

    21. 20% of 800 is: / 800 का 20% कितना है?

    • A. 150
    • B. 160 (Correct)
    • C. 170
    • D. 180

    Explanation: 20% = 20/100, so answer = 160. / प्रतिशत को 100 से भाग देकर मूल संख्या से गुणा करें।

  22. 3. Number Series / संख्या श्रृंखला — Profit-Loss / लाभ-हानि

    22. An article bought for Rs 950 is sold at 20% profit. Find SP. / Rs 950 में खरीदी वस्तु 20% लाभ पर बेची गई। SP ज्ञात करें।

    • A. Rs 1100
    • B. Rs 1140 (Correct)
    • C. Rs 1180
    • D. Rs 1220

    Explanation: SP = CP x (100 + profit%)/100 = 950 x 120/100 = Rs 1140. / लाभ प्रतिशत जोड़कर विक्रय मूल्य निकालें।

  23. 3. Number Series / संख्या श्रृंखला — Time & Work / समय और कार्य

    23. A finishes a work in 12 days and B in 18 days. Together they finish in: / A 12 दिन और B 18 दिन में काम पूरा करते हैं। साथ में समय?

    • A. 6.2 days
    • B. 7.2 days (Correct)
    • C. 8.2 days
    • D. 9.2 days

    Explanation: Combined time = ab/(a+b) = 12 x 18 / 30 = 7.2 days. / संयुक्त कार्य में दरें जोड़ी जाती हैं।

  24. 3. Number Series / संख्या श्रृंखला — Speed Conversion / चाल परिवर्तन

    24. 72 km/h equals: / 72 किमी/घंटा बराबर है:

    • A. 17 m/s
    • B. 20 m/s (Correct)
    • C. 23 m/s
    • D. 25 m/s

    Explanation: km/h to m/s conversion uses x 5/18. 72 x 5/18 = 20. / किमी/घंटा को मी/से में बदलने के लिए 5/18 से गुणा करें।

  25. 3. Number Series / संख्या श्रृंखला — Simplification / सरलीकरण

    25. Simplify: 24 x 14 + 24 - 14. / सरल करें: 24 x 14 + 24 - 14.

    • A. 338
    • B. 346 (Correct)
    • C. 354
    • D. 362

    Explanation: Apply BODMAS: 336 + 24 - 14 = 346. / पहले गुणा, फिर जोड़-घटाव करें।