# Aptitude Questions: Simplification Set 27

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What should come in place of question mark (?) in the following questions: –

1. (78125)1.3× (15625)1.25÷ (125)2 = 5?
A.8.6
B.6.5
C.10.6
D.12
E.15
Answer & Explanation
Answer – C.10.6
Explanation :
7*1.3 * 5 6*1.25 ÷ 53*2  = 5?
9.1+7.5-6 = 5 10.6
2. 77.55 ÷ 0.03 + 70.2 ÷ 0.9 – 506.25 ÷0.75 = ?
A.1966
B.1950
C.1988
D.1945
E.1997
Answer & Explanation
Answer – C.1988
Explanation :
7755/3 = 2585
702/9 = 78
506.25/0.75 = 675
2585+78 – 675 = 1988
3. (1276/44) ÷ (23/805) * (1275/510) = ?
A.2500
B.2835.7
C.2537.5
D.2800
E.2450
Answer & Explanation
Answer –
Explanation :
29 * 35 * 2.5 = 2537.5
4. √7580 * √1325 ÷ √665 – √6395 = ?
A.34
B.41
C.53
D.60
E.67
Answer & Explanation
Answer – B. 41
Explanation :
√7580 = 87 ; √1325= 36; √665 = 26 ; √6395 = 80
87 *1.4 = 121.8 – 80 = 41.8
5. 79.008% of 799.998 + 42.99% of 499.999 – 53.93% of 699.92 = ?
A.459
B.445
C.456
D.496
E.469
Answer & Explanation
Answer –
Explanation :
79 * 800/100 + 43 * 500 / 100 – 54*700/100
632 + 215 – 378 = 469
6. √7876 x √1532 ÷ √889= ?
A.136
B.128
C.116
D.112
E.105
Answer & Explanation
Answer – C.116
Explanation :
√7876 ≈ 89; √1532 ≈ 39; √889 ≈ 30
89 x 39 ÷ 30
7. 429.989 ÷ 19.998 + 37.997 – 49.0023 =?
A.9.5
B.12.75
C.15.5
D.18.25
E.22.55
Answer & Explanation
Answer – A.9.5
Explanation :
430/20+ 38 – 50 = 9.5
8. 21333.759 + 129.097 * 229.679 – 49928.915= ?
A.1529
B.1530
C.1295
D.1305
E.1925
Answer & Explanation
Answer – D.1305
Explanation :
21334+130*230 – 49929
21334 + 29900 – 49929 = 1305
9. 19789.856 + 296.756 – 97.89 – X = 4965 ÷ 824 * 2939.572
A.2350
B.2400
C.2530
D.2553
E.2535
Answer & Explanation
Answer – A.2350
Explanation :
19790 + 297 – 98 – X = 6 * 2940
X= 2349
10. (63.83)2+ (56.96)2– (77.81)2= ?
A.1150
B.1260
C.1340
D.1450
E.1580
Answer & Explanation
Answer – B.1260
Explanation :
(63.83)2 = 4096
(56.96)2 = 3249; (77.81)2 = 6084;
4096+3249 – 6084 = 1261