Q1. 53824 = ?
| A. 242 |
B. 332 |
| C. 232 |
D. 202 |
Answer- Option C
Explanation-
2| 5 38 24 ( 232
| 4
| -----
43| 138
| 129
| ------
924
| 924
| -------
| x
-------
53824 = 232.
Q2. .00000676 = .0026, the square root of 67,60,000 is:
| A. 260 |
B. 2.6 |
| C. 260 |
D. 2600 |
Answer- Option D
Explanation-
6760000 =
0.0000676 x 102
=
0.0000676 x
102 = .0026 x 10
6
= 2600.
Q3. If 18 * 14 * x = 84, then x equals:
Answer- Option A
Explanation-
18 * 14 * x = 84
⇔ 18 * 14 * x = 84 * 84
⇔ x =
= 28.
Q4. 50 x 98 is equal to:
| A. 65.95 |
B. 70 |
| C. 63.75 |
D. 70.25 |
Answer- Option B
Explanation-
50 x
98 =
50 x 98 =
4900 = 70.
Q5. The least number of which 1470 must be divided to get a number which is perfect square, is:
Answer- Option C
Explanation-
1470 = 7 x 7 x 5 x 6.
To make it a perfect square, it must be divided by 5 x 6, i.e., 30.
Q6. 
is equal to:
A. 4
1
2 |
|
B. 5
1
2 |
|
C. 3
1
2 |
|
D. 2
1
2 |
|
Answer- Option A
Explanation-
=
2 +
1
2 |
+ 2 =
| 4 |
1
2 |
.
Q7. If a = 
and b = 
, the value of 
is:
Answer- Option A
Explanation-
a =
x
=
b =
x
=
.
a
2 + b
2 =
+
= 7.
Also, ab =
.
=
= 1.
=
=
4
3 |
.
