Direction (Q. 1 - 10) : what will be the value in the place of question mark (?) ?
(4.75)2 + (0.75)2 - 2 x 4.75 x 0.75 = ?
a2 + b2 - 2ab = (a - b)2 = (4.75 - 75)2 = 42 = 16
0.75% of 8000 + 0.35% of 3200 = ? % of 356
.75% of 8000 = 60
.35% of 3200 = 11.2
∴ 60 + 11.2 = 356/100 x ?
∴ ? = 71.2x100/356 = 20%
25% of 1/17 of 1/5 of 1/3 of 7140 = ?
25% of 7140/17x5x3 = 25% op 28 = 7
53856 ÷ ? = 88 x 36
? = 53856/88x36 = 17
2 7.2 x 4 1.4 ÷ 83 = ?
2 7.2 x (22)1.4 ÷ (23)3 = 272 x 2 2.8 ÷ 29 = 27.2 + 2.8-9 = 21 = 2
3 2/5 + 7 2/3 + 9 3/5 = ?
20 2/3
840 ÷ 12 x 6 + 820 ÷ 4 = ?
840 ÷ 12 x 6 + 820 ÷ 4 = 70 x 6 + 205 = 420 + 205 = 625
21.2 x 128 x 160.2 x 41.3 = 4 ?
21.2 x 27 x 28 x 22.6 = 22x?
1.2 x 7 + 8 + 2.6 = 2 x ?
11.6 = 2 x ? ∴ ? = 5.8
[(168)2 ÷ 56 x 21] ÷ 42 = √?
[(168)2 ÷ 56 x 21] ÷ 42
= [28224 ÷ 56 x 21] ÷ 42
= [504 x 21] ÷ 42 = 10584 ÷ 42 = 252
∴ (?) = (252)2 = 63504
(44)3 + (33)3 = ?
(44)3 + (33)3 = 85184 + 35937 = 121121
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