Solve `sqrt((27-:5xx?)+15)=5. 4-:6+0. 3` (a) 2 (b) 6 (c) 10 (d) 4

Solve 48. 2xx2. 5xx2. 2+?=270 (a) 6.5 (b) 2.8 (c) 4.9 (d) 3.4 (e) 1.2

Solve the following with regard to significant figures. (a) sqrt(4.5 - 3.31) (b) 5.9 xx 10^(5) - 2.3 xx 10^(4) (c) 7.18 + 4.3 (d) 6.5 + 0.0136

The value of sqrt(6+sqrt(6+sqrt(6+))) ..........is (a) 4 (b) 3 (c) -2 (d) 3.5

A ratio equivalent to 2:5 is (a) 6: 15 (b) 4:5 (c) 5:2 (d) 5:4

Solve 2.5xx4.8+7.2xx1.5-1.2xx14=? (a) 1.2(b)6.5(c)4(d)4.8(e)6

Find Value of:- 4+3 xx 4 +3 xx 4^(2) +3xx 4^(3) +3 xx 4^(4) +3 xx 4^(5) = ? (a) 5 xx 4^(5) (b) 9xx 4^(4) (c) 4^(6) (d) 10 xx 4^(4)

786-:24xx?=6.55(a)0.2(b)0.4(c)4(d)5(e) None of these

A= {5, 10, 15, 20}, B= {2,4,6,8, 10}. Out of the following, which is a function? (a) {(5, 2), (10, 4), (15,6), (20, 9)} (b) {(5, 2), (10, 4)} (c ) {(5, 2), (10, 4), (15,6), (20), 10)} (d) {(5, 1), (5, 10), (15, 6), (20,9)}