Direction (Q. 1 - 5) : What approximate value will come in place of the question mark (?) in the following questions? (You are not expected to calculate the exact value.)
(24/9)2 x 399/39 ÷ 41/899 = ?
? = (8/3)2 x 400/40 x 900/40 = 1600
67.99% of 1401 - 13.99% of 1299 = ?
? = 1400 x 68/100 - 1300 x 14/100
= 952 - 182 = 770
5466.97 - 3245.01 + 1122.99 = ? + 2309.99
5466.97 - 3245.01 + 1122.99
= ? + 2309.99
= 3344.95 = ? + 2309.99
= ? = 3344.95 - 2309.99
= 1034.96 = 1030
5998 -r 9.98 + 670.99 - 139.99 = ?
? = 6000 ÷ 10 + 671 - 140
= 600 + 671 - 140 = 1131
∴ Required answer = 1130
- (4.99)3 + (29.98)2 - (3.01)4 = ?
? = - (5)3 + (30)2 - (3)4
= - 125 + 900 - 81 = 694
∴ Required answer = 690
Direction (Q. 6 - 10) : What will come in place of the question mark (?) in the following number series.
1 7 49 343 (?)
The pattern of the number series is :
1 x 7 = 7
7 x 7 = 49
49 x 7 = 343
343 x 7 = 2401
13 20 39 78 145 (?)
13 + 7 = 20
20 + 19 (= 7 + 12) = 39
39 + 39 (= 19 + 20) = 78
78 + 67 (= 39 + 28) = 145
145 + 103 (= 67 + 36) = 248
12 35 81 173 357 (?)
12 + 1 x 23 = 35
35 + 2 x 23 = 35 + 46 = 81
81 + 2 x 46 = 81 + 92 = 173
173 + 2 x 92 = 173 + 184 = 357
357 + 2 x 184 = 357 + 368 = 725
3 100 297 594 991 (?)
The pattern of the numbr series is :
3 + 97 = 100
100 + 197 = 297
297 + 297 = 594
594 + 397 = 991
991 + 497 = 1488
112 119 140 175 224 (?)
112 + 1 x 7 = 119
119 + 3 x 7 = 119 + 21 = 140
140 + 5 x 7 = 140 + 35 = 175
175 + 7 x 7 = 175 + 49 = 224
224 + 9 x 7 = 224 + 63 = 287
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