Puzzles Questions and Answers

91

What number should replace the question mark?
10, 10,9, 7, 7, ?, 4, 4, 3, 1

a

7

b

6

c

1

d

0

correct answer b

Answer: Option 2

Explanation:

The sequence progresses – 0, –1, –2 repeated.

92

Simplify: + 6 – 22 × 3 – 8

a

-2

b

-68

c

0

d

68

correct answer b

Answer: Option 2

Explanation:

= + 6 – ( 22 × 3) – 8
= + 6 – 66 – 8 = – 68.

93

Complete this sequence?
2 3 4 9 16 81 256

a

6561

b

11.76

c

-22.72

d

22.72

correct answer a

Answer: Option 1

Explanation:

×1, ×2, ×3, ×4

94

	What number should replace the question mark?

a

86

b

85

c

89

d

70

correct answer a

Answer Option 1

Explanation:

Add five starightdown;
Add ten sideways;
Add fifteen diagonally.

95

	What number should replace the question mark?

a

0

b

7

c

2

d

1

correct answer b

Answer: Option 2

Explanation:

The numbers in each line contain the digits 1 – 9 once each only.

96

	What is X?

a

0

b

123

c

1

d

4

correct answer b,c

Answer: Option 3

Explanation:

Spaced correctly, the series becomes 13 15 17 19 2(1)

97

	Which number is the odd one out?

a

2197

b

3826

c

763

d

8674

correct answer b

Answer: Option 2

Explanation:

The rest are in anagram pairs, i.e.8674/6847, 2493/3429, 1376/7163, 2197/1927

98

	What two terms complete this series?

a

S 21

b

F 19

c

S 12

d

S 19

correct answer d

Answer: Option 4

Explanation:

There are two separate series. The letters advance missing first two (A to D). then three (D to H) and so on. After M there must be five missing letters, bringing us to S. The numbers advance in the same way.

99

What number should replace the question mark?
1, 2, 6, 12, 36, 72, ?

a

514

b

216

c

521

d

458

correct answer b

Answer: Option 2

Explanation:

×2, ×3 repeated.

100

	What number should replace the question mark?

a

12

b

11

c

9

d

7

correct answer b

Answer: Option 2

Explantion:

(6×11) + 24 = 90