Q. What will come in place of the question mark (?) in the following number series?
18, 29, 42, 53, ?, 77
Answer 66
EXPLANATION
Given number series
18, 29, 42, 53, ?, 77
The pattern is as follows
18 + 11 = 29
29 + 13 = 42
42 + 11 = 53
53 + 13 = 66
66 + 11 = 77
Q.What should come in place of question mark (?) in the following number series?
36, 18, 6, 3, 1, ?
Answer 0.5
EXPLANATION
Given number series 36, 18, 6, 3, 1, ?
The pattern is as follows:
36/2 = 18
18/3 = 6
6/2 = 3
3/3 = 1
1/2 = 0.5
Q. What will come in place of the question mark (?) in the following number series?
256, ?, 190, 167, 148, 131
Answer 219
EXPLANATION
Given number series
131 + 17 = 148
148 + 19 = 167
167 + 23 = 190
190 + 29 = 219
219 + 37 = 256
Q. What should come in place of the question mark (?) in the following number series?
8, 6, 9, 23, ?
Answer 87
EXPLANATION
Given number
8, 6, 9, 23, ?
The pattern of given series is:
8 x 1 - 2 = 6
6 x 2 - 3 = 9
9 x 3 - 4 = 23
23 x 4 - 5 = 87
Q. What should come in place of question mark (?) in the following number series?
1, 244, 163, 190, 181, ?,
Answer 184
EXPLANATION
Given number series
1, 244, 163, 190, 181, ?,
The pattern is as follows
1 + 243 = 244
244 - 81 = 163
163 + 27 = 190
190 - 9 = 181
181 + 3 = 184
Q. What should come in place of question mark (?) in the following question?
600 + 300 ÷ 15 = ? × 31
Answer 20
EXPLANATION
Addition and subtraction can be treated on same priority (from left to right) when they are in consecutive order.
600 + (300/15) = ? × 31
600 + 20 = ? × 31
? = 620/31 = 20
Q. What should come in place of question mark (?) in the following question?
41% of 600 - 250 = ? - 77% of 900
Answer 689
EXPLANATION
41% of 600 - 250 = ? - 77% of 900
246 - 250 =? - 693
246 - 250 +693 =?
? = 689
Q. What should come in place of question mark (?) in the following question?
52000 ÷ 40 ÷ 65 × 30 = ? - √400
Answer
EXPLANATION
52000 ÷ 40 ÷ 65 × 30 = ? -√400
(52000 ÷ 40) ÷ 65 × 30 = ? - 20
(1300 ÷ 65) × 30 = ?- 20
20 × 30 = ? - 20
600 = ? - 20
? = 620
18, 29, 42, 53, ?, 77
Answer 66
EXPLANATION
Given number series
18, 29, 42, 53, ?, 77
The pattern is as follows
18 + 11 = 29
29 + 13 = 42
42 + 11 = 53
53 + 13 = 66
66 + 11 = 77
Q.What should come in place of question mark (?) in the following number series?
36, 18, 6, 3, 1, ?
Answer 0.5
EXPLANATION
Given number series 36, 18, 6, 3, 1, ?
The pattern is as follows:
36/2 = 18
18/3 = 6
6/2 = 3
3/3 = 1
1/2 = 0.5
Q. What will come in place of the question mark (?) in the following number series?
256, ?, 190, 167, 148, 131
Answer 219
EXPLANATION
Given number series
131 + 17 = 148
148 + 19 = 167
167 + 23 = 190
190 + 29 = 219
219 + 37 = 256
Q. What should come in place of the question mark (?) in the following number series?
8, 6, 9, 23, ?
Answer 87
EXPLANATION
Given number
8, 6, 9, 23, ?
The pattern of given series is:
8 x 1 - 2 = 6
6 x 2 - 3 = 9
9 x 3 - 4 = 23
23 x 4 - 5 = 87
Q. What should come in place of question mark (?) in the following number series?
1, 244, 163, 190, 181, ?,
Answer 184
EXPLANATION
Given number series
1, 244, 163, 190, 181, ?,
The pattern is as follows
1 + 243 = 244
244 - 81 = 163
163 + 27 = 190
190 - 9 = 181
181 + 3 = 184
Q. What should come in place of question mark (?) in the following question?
600 + 300 ÷ 15 = ? × 31
Answer 20
EXPLANATION
Addition and subtraction can be treated on same priority (from left to right) when they are in consecutive order.
600 + (300/15) = ? × 31
600 + 20 = ? × 31
? = 620/31 = 20
Q. What should come in place of question mark (?) in the following question?
41% of 600 - 250 = ? - 77% of 900
Answer 689
EXPLANATION
41% of 600 - 250 = ? - 77% of 900
246 - 250 =? - 693
246 - 250 +693 =?
? = 689
Q. What should come in place of question mark (?) in the following question?
52000 ÷ 40 ÷ 65 × 30 = ? - √400
Answer
EXPLANATION
52000 ÷ 40 ÷ 65 × 30 = ? -√400
(52000 ÷ 40) ÷ 65 × 30 = ? - 20
(1300 ÷ 65) × 30 = ?- 20
20 × 30 = ? - 20
600 = ? - 20
? = 620
