`((3. 63)^2-(2. 37)^2)/(3. 63+2. 37)` is simplified to (a) 1.26 (b) 1.36 (c) 2.26 (d) 6

((63+36)^(2)+(63-36)^(2))/(63^(2)+36^(2)) =?

If z=1/((1-i)(2+3i)), then |z| is (a) . 1 (b ). 1/sqrt(26) (c) . 5/sqrt(26) (d) . none of these

2, 5, 10, 17, 26, 37; 50, 64 (a) 50 (b) 26 (c) 37 (d) 64

C_(1) + C_(2) + C_(3) + …… C_(6) = 63

(37^(3)-28^(3))/(37^(2)+37.28+28^(2))=

If A=[(2,-3),(-4,1)] then (3A^2+12A) is equal to (a) [(72,-84),(-63,51)] (b) [(51,63),(84,72)] (c) [(52,84),(63,72)] (d) [(72,-63),(-84,51)]

"^(74)C_(37)-2 is divisible by a. 37^(2) b. 38. c. 36 d. none of these

The simplification of 2.002 + 7.9+{ 2.8-6.3+ ( 3.6-1.5) + 15.6} gives

A company manufactures car batteries of a particular type. The lives (in years) of 40 such batteries were recorded as follows: 2.6 3.0 3.7 3.2 2.2 4.1 3.5 4.5 3.5 2.3 3.2 3.4 3.8 3.2 4.6 3.7 2.5 4.4 3.4 3.3 2.9 3.0 4.3 2.8 3.5 3.2 3.9 3.2 3.2 3.1 3.7 3.4 4.6 3.8 3.2 2.6 3.5 4.2 2.9 3.6 Construct a grouped frequency distribution table for this data, using class intervals of size 0.5 starting from the interval 2 - 2.5.