Mathematics Mcqs

A. 14
B. 14 1/2
C. 14 3/4
D. None of these
Explanation:
8 2/3 + 6 4/5 = (8 + 6) + (10/15 + 12/15) = 14 + 1 7/15 = 15 7/15

A. 2000
B. 3000
C. 4000
D. 6000
Explanation:
Let 815 + ? be k
=> 84k/100 – (815 * 84)/100 = 1680
=>84(k/100 – 815/100) = 1680
=> (k – 815)/100 = 20 => k = 2815
k = 815 + ? = 2815 => ? = 2000

A. 140
B. 120
C. 160
D. 180
Explanation:
20% of 40 + ? % of 80 = 120
=> 800/100 + ?/100 * 80 = 120
=> ? = 140

A. 121
B. 1331
C. 14641
D. 2662
Explanation:
?/9261 = (11/21)3 = 1331/9261
=> ? = 1331

A. 1/2
B. 1/3
C. 1/4
D. 1/5
Explanation:
? = (98 / 7 / 2) / 14 = 1/2

A. 15
B. 20
C. 25
D. 35
Explanation:
? = (24 * 5 * 7 * 9) / 216 = 35

A. 2466.462
B. 2664.642
C. 2464.462
D. 2466.642

A. 8000
B. 8010
C. 8020
D. 8040
Explanation:
(2000 + 3)(2000 + 4) – (2000 + 1)(2000 + 2) = ?
Since (2000 * 2000) – (2000 * 2000) is equal to zero. ?
= (8000 + 6000 + 12) – (4000 + 2000 + 2)
=> ? = 14012 – 6002 = 8010

A. 18
B. 22
C. 24
D. 26
Explanation:
?2 = 3/7 * 4/9 * 2/5 * 7560
=> ?2 = 576 = 242
? = 24

A. 20
B. 40
C. 60
D. 80
Explanation:
32/100 * 425 – x/100 * 250 = 36
=> x/100 * 250 = 136 – 36 = 100
=> x = (100 * 100)/250 = 40