`8^7xx2^6-:8^2.4=8^?` a. 6.6 b. 8.6 c. 9.6 d. 10.6

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

(4+4×18−6−8)/(123×6−146×5)=? (a) 1 (b) 2 (c) 6.65 (d) 7.75

The value of ((8.6xx5.3+8.6xx4.7)/(4.3xx9.7-4.3xx8.7)) is (a) 3.3 (b) 6.847 (c) 13.9 (d) 20

Calculate the following a. (6.7 xx 10^(5)) xx (4.6 xx 10^(4)) b. (7.6 xx 10^(7)) xx (3.8 xx 10^(-4)) c. (6.8 xx 10^(-3)) xx (5.2 xx 10^(-4)) d. (6.7 xx 10^(5)) / (4.6 xx 10^(4)) e. (7.6 xx 10^(7)) / (3.8 xx 10^(-4)) f. (6.8 xx 10^(-3)) / (3.8 xx 10^(-4)) g. 7.65 xx 10^(2) + 2.72 xx 10^(3) h. 7.87 xx 10^(-4) - 2.61 xx 10^(-5)

Find the mean of the numbers 7.6, 6.8, 8.5, 9.4, 5.9, 6.4, 9.1 and 4.7

Convert the following into factorials : (i) 2.4.6.8.10 (ii) 4.5.6.7.8.9.10.11.

The ages of A and B are in the ratio 6:5 and the sum of their ages is 44 years. What will be the ratio of their ages after 8 years? a. 7:6 b. 8:7 c. 9:8 d. 3:4

The perpendicular distance of the point P(6,7,8) from xy-plane is a.8 b.7 c.6 d.10

The mode and median of the data 8, 6, 8, 7, 6, 8, 7, 6 is A. 7 and 8 B. 6 and 7 C. 8 and 7 D. 6 and 8