a2zinterviews

1.	What decimal of an hour is a second?
	A.  .0025
	B.  .0256
	C.  .00027
	D.  .000126

Solution

Required decimal = 1/ 60 x 60 = 1/ 3600 = .00027.

2.	The value of (4.7×13.26 + 4.7×9.43+4.7×77.31) is
	A.  0.47
	B.  47
	C.  470
	D.  4700

Solution

Given expression = 4.7×(13.26+9.43+77.31) = 4.7 ×100 = 470.

3.	The value of (0.2×0.2+0.01) (0.1×0.1+0.02)-1 is equal to
	A.  5/3
	B.   9/5
	C.  41/4
	D.  41/12

Solution

Given expression (0.2×0.2+0.01)/ (0.1×0.1×+0.02) = 0.04+0.01/0.01+0.02 = 0.05 / 0.03 = 5 / 3.

4.	Which one of the following is equal to 3.14×106?
	A.  314
	B.  3140
	C.  3140000
	D.  None of these

Solution

Given, 3.14 ×106 =3.140000×1000000 = 3140000.

5.	0.014×0.014= ?
	A.  0.000196
	B.  0.00196
	C.  19.6
	D.  196

Solution

Sum of decimals places= 6. 14×14 = 196. = s0.014×0.014 = 0.000196