Directions (1-5) : What should come in place of the question mark (?) in the following number series ?
1. 7, 35, 175, ?, 4375, 21875
The pattern is ×5, ×5 and so on.
2. 435, 556, 700, 869, ?, 1290
The difference between consecutive terms is 11^2, 12^2, 13^2 and so on.
3. 187.5, 182, 171, ?, 132.5, 105, 72
The pattern is -5.5, -11, -16.5, -22 and so on.
4. 18, 72, 9, ?, 6.75, 135
The pattern is ×4, ÷8 , ×12, ÷16 and so on.
5. 10, 18, 28, 40, 54, ?
The difference between consecutive terms is 8, 10, 12, 14 and so on.
Directions (6-10) : What should come in place of the question mark (?) in the following
6. 1725 ÷ 35 ÷ 12 = ?
7. 74.7 + 13.07 × 6.91 = ?
8. 27 × 373 ÷ 16 = ?
9. √230 * √15 = ?
10. (2432 + 587 + 1415) ÷ 378 = ?
1. 7, 35, 175, ?, 4375, 21875
- (1) 1575
- (2) 875
- (3) 675
- (4) 1275
- (5) None of these
The pattern is ×5, ×5 and so on.
- (1) 1045
- (2) 1094
- (3) 1038
- (4) 1068
- (5) None of these
The difference between consecutive terms is 11^2, 12^2, 13^2 and so on.
- (1) 145.5
- (2) 155.5
- (3) 154.5
- (4) 144.5
- (5) None of these
The pattern is -5.5, -11, -16.5, -22 and so on.
- (1) 108
- (2) 102
- (3) 144
- (4) 160
- (5) None of these
The pattern is ×4, ÷8 , ×12, ÷16 and so on.
- (1) 66
- (2) 70
- (3) 68
- (4) 72
- (5) None of these
The difference between consecutive terms is 8, 10, 12, 14 and so on.
6. 1725 ÷ 35 ÷ 12 = ?
- (1) 3
- (2) 6
- (3) 4
- (4) 5
- (5) 7
- (1) 178
- (2) 186
- (3) 152
- (4) 158
- (5) 165
8. 27 × 373 ÷ 16 = ?
- (1) 630
- (2) 644
- (3) 598
- (4) 614
- (5) 618
9. √230 * √15 = ?
- (1) 70
- (2) 90
- (3) 40
- (4) 60
- (5) 50
10. (2432 + 587 + 1415) ÷ 378 = ?
- (1) 18
- (2) 16
- (3) 12
- (4) 9
- (5) 22