Only 5% of People Can Solve This Brain Teaser – Test Your IQ with This Tricky Logic Question

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51)Find the missing number.
1, 3, 9, 27, ?

A) 54

B) 63

C) 81

D) 72

View Answer

C) 81
Explanation:Multiply by 3 each step → 81.

52)What is the next number?
100, 90, 80, 70, ?

A) 65

B) 60

C) 55

D) 50

View Answer

B) 60
Explanation:Decrease by 10 each step → 60.

53)Which number replaces ?
4, 16, 36, 64, ?

A) 81

B) 90

C) 100

D) 121

View Answer

C) 100
Explanation:Squares of even numbers: \(2^2,4^2,6^2,8^2\) → next \(10^2=100\).

54)Find the missing number.
2, 3, 5, 7, 11, ?

A) 12

B) 13

C) 14

D) 15

View Answer

B) 13
Explanation:Prime numbers sequence → next 13.

55)What is the next number?
3, 6, 12, 24, ?

A) 36

B) 40

C) 48

D) 60

View Answer

C) 48
Explanation:Multiply by 2 → 48.

56)Which number is odd?
12, 18, 24, 31, 36

A) 12

B) 24

C) 31

D) 36

View Answer

C) 31
Explanation:31 is the only odd number.

57)If 2+2=8 and 3+3=18, what is 4+4?

A) 24

B) 28

C) 32

D) 40 4×4×2 = 32.

View Answer

C) 32
Explanation:Pattern: a+a = a × a × 2

58)Find the missing number.
6, 12, 18, 24, ?

A) 28

B) 30

C) 32

D) 36

View Answer

B) 30
Explanation:Add 6 each time → 30.

59)What is the next number?
1, 4, 7, 10, ?

A) 12

B) 13

C) 14

D) 15

View Answer

B) 13
Explanation:Arithmetic sequence +3 → 13.

60)Which number replaces ?
5, 10, 20, 40, ?

A) 60

B) 70

C) 80

D) 90

View Answer

C) 80
Explanation:Multiply by 2 → 80.

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