SBI PO Simplification Questions and Answers Set–2

1 . DIRECTIONS (Qs. 1 to 10) :What will come in place of questions mark (?) in the following questions? $Q.$383 × 38 × 3.8 = ? A.   58305.8 B.   57305.6 C.   56305.4 D.   55305.2 2 . 43.231 – 12.779 – 6.542 – 0.669 = ? A.   27.341 B.   25.242 C.   23.241 D.   21.342 3 . 572 + 38 × 0.50 – 16 = ? A.   289 B.   305 C.   448 D.   None of these 4 . 6269 + 0.75 × 444 + 0.8 × 185 = ? × 15 A.   448 B.   450 C.   452 D.   454 5 . $3\over7$$\times$$2\over5$$\times$$11\over13$$\times$? = 1056 A.   7280 B.   7296 C.   7308 D.   7316 6 . 6138 + $\sqrt[3]{17576}$ = $\sqrt?$ x 9 A.   676 B.   729 C.   784 D.   841 7 . $(27)^{7.5} \times (729)^{1.75} \div (19683)^{-2}\div$ $1 \over (19683)^{-5}$ = $(27)^?$ A.   2 B.   7 C.   5 D.   9 8 . $\sqrt{31329 } \times 5$ = ? A.   855 B.   865 C.   875 D.   885 9 . (78700 ÷ 1748) + (3.79 × 121.24) = ? A.   305 B.   415 C.   525 D.   635 10 . $\sqrt{6080} \div \sqrt[3] {74000} + \sqrt [4] {6560}$ = ? A.   30 B.   80 C.   130 D.   170

Answers & Solutions   1 .     Answer : Option D Explanation : ? = 383 × 38 × 3.8 = 383 × 144.4 = 55305.2 2 .     Answer : Option C Explanation : ? = 43.231 – 12.779 – 6.542 – 0.669 = 23.241 3 .     Answer : Option D Explanation : ? = 572 + 38 × 0.50 – 16 = 572 + 19 – 16 = 591 – 16 = 575 4 .     Answer : Option B Explanation : 15 × ? = 6269 + 333 + 148 = 6750 ? = $6750 \over 15$ = 450 5 .     Answer : Option A Explanation : ? = $1056 \times 7 \times 5\times 13 \over 3\times 2 \times 11$ = 7280 6 .     Answer : Option B Explanation : 6138 + $\sqrt[3]{17576}$ = $\sqrt?$ x 9 $\sqrt?$ x 9 = 6318 + 26 = 243 $\sqrt?$ = $243\over 9$ = 27 ? = $(27)^2$ = 729 7 .     Answer : Option A Explanation : $(27)^{7.5} \times (27)^{3.5} \div (27)^{-6} \div (27)^{15}$ = $(27)^{7.5 + 3.5 + 6 - 15}$ = $(27)^{17 - 15}$ = $(27)^2$ ? = 2 8 .     Answer : Option D Explanation : ? = $\sqrt{31329 } \times 5$ = 177 x 5 = 885 9 .     Answer : Option C Explanation : ? $\cong$ $78700 \over 1750$ + 4 x 120 = 45 + 460 = 505 $\cong$ 525 10 .     Answer : Option C Explanation : ?$\cong$ 78 + 42 + 9 = 129 $\cong$130