Directions(1-10): What will come in place of question mark ‘?’ in the following questions.
- (13)^54 * (13)^(-51) = (169)^2 * ?
13^-213^113^013^-113^2Option D
(13)^54 * (13)^(-51) = (169)^2 * ?
=> ? = [ 13^(54-51)]/13^4
=> ? = 13^-1 - 748 × ? × 9 = 861696
128150120115100Option A
748 × ? × 9 = 861696
? = 128 - 8(1/3)% × 240 + 8(1/3) % × 384 = 25/100 ×?
190178200180208Option E
8(1/3)% × 240 + 8(1/3) % × 384 = 25/100 ×?
=>? /4 = 25/300 *[624]
=>? = 208 - 2115 ÷ ? = 94 × 15
2.21.83.93.21.5Option E
2115 ÷ ? = 94 × 15
=>? = 2115/94*15
=> ? = 1.5 - ? = √(273 − 119 × 3 + 280)
1410151312Option A
? = √(273 − 119 × 3 + 280)
? = √(273 − 357 + 280) = √196 = 14 - 74156 – ? – 321 – 20 + 520 = 69894
41144000444140404253Option C
74156 – ? – 321 – 20 + 520 = 69894
? = 74676 – 69894 – 341 = 4441 - 6573 ÷ 21 × (0.2)^2 =?
10.5014.3011.1112.5210.12Option D
6573 ÷ 21 × (0.2)^2 =?
? = [6573*0.04]/21 = 12.52 - (4)^? = 32 × 512 ÷ 128 × 8
15234Option B
(4)^? = 32 × 512 ÷ 128 × 8
=>(4)^? = (32 × 512 × 8)/ 128 = 1024
=> (4)^? = (4)^5
⇒ ? = 5 - 75% of 450 + 25% of 850 = ?
500430550450470Option C
75% of 450 + 25% of 850 = ?
75% × 450 + 25% × 850 = ?
=> ? = 25/100[3 × 450 + 850] = 1/4 [2200] = 550 - ? +2(1/3) + 5(1/6) – 7(8/11) = 3(3/11) + 8(1/2)
1714121511Option C
? +2(1/3) + 5(1/6) – 7(8/11) = 3(3/11) + 8(1/2)
=>? + 2 + (1/3) + 5 + 1/6 – 7 – 8/11 = 3 + 3/11 + 8 + 1/2
=>? = 11 + 3/11 + 8/11 + 1/2 – 1/3 – 1/6
=> 12 + (3 – 2 – 1)/ 6 = 12
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