mcq on simplification with answers for ssc exams

71) 12.8% of 715 = ?
(a) 91.25
(b) 92.15
(c) 95.12
(d) 93.21
(e) None of these
72) \displaystyle 3596-2832+2040=?\times 40
(a) 67.4
(b) 70.1
(c) 74.5
(d) 69.3
(e) None of these
73) \displaystyle 6\frac{3}{8}-3\frac{1}{{16}}+5\frac{1}{8}=?
(a) \displaystyle 6\frac{5}{{16}}
(b) \displaystyle 4\frac{5}{{16}}
(c) \displaystyle 9\frac{3}{{16}}
(d) \displaystyle 8\frac{7}{{16}}
(e) None of these
74) \displaystyle 7474+4747=?\times 25
(a) 448.84
(b) 482.48
(c) 488.84
(d) 484.48
(e) None of these
75) \displaystyle \sqrt{?}-11=\sqrt{{1764}}
(a) \displaystyle \sqrt{{2809}}
(b) \displaystyle {{53}^{2}}
(c) \displaystyle \sqrt{{53}}
(d) 53
(e) None of these

76) \displaystyle 10.8\times 5.5\times 8.4=?
(a) 458.69
(b) 489.96
(c) 498.96
(d) 485.69
(e) None of these
77) \displaystyle 5\times ?=8484\div 4
(a) 444.2
(b) 424.2
(c) 442.2
(d) 422.2
(e) None of these
78) \displaystyle (4\times 4\times 4\times 4\times 4\times {{4)}^{5}}\times (4\times 4\times{{4)}^{8}}\div {{(4)}^{3}}={{64}^{?}}
(a) 17
(b) 10
(c) 16
(d) 11
(e) None of these
79) \displaystyle \frac{5}{8}\times 2\frac{3}{5}\div \frac{4}{9}=?
(a) \displaystyle 2\frac{{13}}{{27}}
(b \displaystyle 1\frac{{11}}{{27}}
(c) \displaystyle 2\frac{{23}}{{32}}
(d) \displaystyle 3\frac{{21}}{{22}}
(e) None of these
80) \displaystyle 7059-2350+1936=?\times 50
(a) 123.6
(b) 132.3
(c) 132.6
(d) 123.9
(e) None of these