Directions: Each of the questions given below is followed by series of options among which you have to choose the best one. You can also review your choices by clicking into answer section.
1. The value of 0.57 is:
A. 57/10
B. 26/45
C. 57/99
D. 52/99
Answer
Explanation:
No explanation
2. 0.009/?=0.01
A. 0.0009
B. 0.09
C. 0.9
D. 9
Answer
Explanation:
Let.009 x =.01;
Then x =.009/.01= .9/1=.9
3. 4211.01 + 22.261 – ? = 2645.759
A. 1587.512
B. 1586.532
C. 1588.021
D. 1586.422
Answer
Explanation:
Required Value = 4211.01 + 22.261 – 2645.759 = 1587.512
4. Which of the following is equal to 0.024 × 106?
A. 2400000
B. 240000
C. 24000
D. 2400
Answer
Explanation:
0.024 × 106 = 0.024 × 1000000 = 24000
5. Given that 268 74 = 19832, find the values of 2.68 0.74
A. 1.9832
B. 1.9831
C. 1.8831
D. 1.9952
Answer
Explanation:
Sum of decimal places = (2 + 2) = 4
2.68 * 0.74 = 1.9832
6. On simplification 1/0.04 is equal to:
A. 2.5
B. 2/5
C. 25
D. 1/40
Answer
Explanation:
No explanation
7. If (1 / 3.718) = 0.2689, Then find the value of (1 / 0.0003718).
A. 2699
B. 2690
C. 2680
D. 2689
Answer
Explanation:
1/0.0003718
(10000/3.718)
10000*(1 / 3.718)
10000*0.2689=2689.
8. Evaluate: (2.39)2 – (1.61)2 / (2.39 – 1.61)
A. 2
B. 4
C. 6
D. 8
Answer
Explanation:
(a2 – b2)/(a-b) = (a + b)*(a – b)/ (a-b)= (a + b)= (2.39 + 1.61) = 4.
9. 54.327 x 357.2 x 0.0057 is same as
A. 5.4327 x 3.572 x 5.7
B. 5.4327 x 3.572 x 0.57
C. 54327 x 3572 x 0.0000057
D. None of these
Answer: Option A
Answer
Explanation:
Number of decimal places in the given expression = 8
Number of decimal places in A. = 8
Number of decimal places in B. = 9
Number of decimal places in C. = 7
Clearly, the expression in A. is the same as the given Expression.
10. The rational number for recurring decimal 0.125125…. is:
A. 63/487
B. 119/993
C. 125/999
D. None of these
Answer
Explanation:
0.125125… = 0.125¯¯¯¯¯ = 125/999
11. The expression (11.98*11.98 + 11.98*x + 0.02*0.02) will be perfect square of x if x equal to………
A. 0.02
B. 0.04
C. 0.2
D. 0.4
Answer
Explanation:
(11.98)² + (0.02)² + 11.98 * x
2 *(11.98) (0.02)² = 11.98 * x or x = 0.04
12. Convert 0.343434….. into a fraction
A. 3199
B. 3299
C. 3399
D. 3499
Answer
Explanation:
0.343434…..=0.34¯¯¯¯¯=3499
[Reference : Conversion of Recurring Decimals into Vulgar Fractions]
13. The value of (3.75 * 3.75 – 2*3.75*2.75 + 2.75*2.75 ) is.
A. 1
B. 4.75
C. 1.75
D. 6.5
Answer
Explanation:
(3.75)² – 2*3.75*2.75 + (2.75)² use formula (a² – 2ab + b²) = (a – b)²
14. Which of the following are in descending order of their value ?
A. 1/3 , 2/5 , 3/7 , 4/5 , 5/6 , 6/7
B. 1/3, 2/5 , 3/5 , 4/7 , 5/6 , 6/7
C. 1/3 , 2/5 , 3/5 , 4/6 , 5/7 , 6/7
D. 6/7 , 5/6 , 4/5 , 3/7 , 2/5 , 1/3
Answer
Explanation:
No explanation
15. 4×0.30−3×0.5000.003= ?
A. 10
B. -10
C. 100
D. -100
Answer
Explanation:
4×0.30−3×0.5000.003=1.2−1.50.003=−0.30.003=−3003=−100
