CSEET Logical reasoning -Number test MCQS with answers

CSEET Number Test  - logical reasoning 15 MCQs with Answers & Explanations

Q1.Find the next number in the series:2, 6, 12, 20, 30, ?

A.  36B. 40C. 42D. 56

Answer: C. 42Explanation:Pattern = +4, +6, +8, +10, +12 → 2 + 4 = 6, 6 + 6 = 12, etc.Next = 30 + 12 = 42.

Q2.Find the missing number:3, 9, 27, 81, ?

A. 162B. 243C. 324D. 729

Answer: B. 243Explanation:Each term × 3 → 3 × 3 = 9, 9 × 3 = 27, etc.Next = 81 × 3 = 243.

Q3.Find the wrong term in the series:5, 10, 20, 40, 90, 180

A. 10B. 40C. 90D. 180

Answer: C. 90Explanation:Pattern should be ×2 each time → 5, 10, 20, 40, 80, 160.So, 90 is wrong (should be 80).

Q4.Find the missing number:7, 14, 28, 56, ?

A. 84B. 98C. 112D. 126

Answer: C. 112Explanation:Each term × 2 → Next = 56 × 2 = 112.

Q5.Find the next term:1, 4, 9, 16, 25, ?

A.  30B. 35C. 36D. 49

Answer: C. 36Explanation:Series of squares: 1², 2², 3², 4², 5² → next is 6² = 36.

Q6.What number should come next?11, 14, 17, 20, ?

A. 21B. 23C. 24D. 25

Answer: B. 23Explanation:Each term +3 → Next = 20 + 3 = 23.

Q7.Find the missing number:2, 4, 8, 16, 32, ?

A. 48B. 64C. 60D. 72

Answer: B. 64Explanation:Each term ×2 → Next = 32 × 2 = 64.

Q8.Find the next number in the pattern:1, 3, 6, 10, 15, ?

A. 18B. 19C. 20D. 21

Answer: D. 21Explanation:Series of triangular numbers → add +2, +3, +4, +5, +6.Next = 15 + 6 = 21.

Q9.Which number should replace the question mark?4, 9, 19, 39, 79, ?

A. 159B. 149C. 169D. 199

Answer: A. 159Explanation:Pattern: (×2) + 14×2+1=9, 9×2+1=19, etc.Next = 79×2+1 = 159.

Q10.Find the wrong number:1, 8, 27, 65, 125

A. 8B. 27C. 65D. 125

Answer: C. 65Explanation:Cubes: 1³, 2³, 3³, 4³ = 64, 5³ = 125 → 65 is wrong (should be 64).

Q11.Find the next term:100, 90, 80, 70, ?

A. 60B. 65C. 55D. 75

Answer: A. 60Explanation:Decreasing by 10 each time → Next = 60.

Q12.Find the next number:3, 6, 12, 24, 48, ?

A. 72B. 84C. 96D. 108

Answer: C. 96Explanation:Each term ×2 → 48×2 = 96.

Q13.Find the missing term:0, 1, 1, 2, 3, 5, 8, ?

A. 10B. 11C. 12D. 13

Answer: D. 13Explanation:Fibonacci series → add two previous terms: 5+8 = 13.

Q14.Find the missing term:121, 144, 169, 196, ?

A. 210B. 220C. 225D. 240

Answer: C. 225Explanation:Squares: 11², 12², 13², 14² → next is 15² = 225.

Q15.Find the next term in the series:1, 4, 13, 40, 121, ?

A. 243B. 364C. 365D. 484

Answer: B. 364Explanation:Pattern: multiply by 3 and add 1 →1×3+1=4, 4×3+1=13, 13×3+1=40, 40×3+1=121, 121×3+1=364.