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21.
The valu 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
22. 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
23. (7.5×7.5+3.75+2.5×2.5)
is equal to
A. 30 B. 60
C. 80 D. 100
24.
Express as vulgar fractions :
(i) 0.17 (ii) 0.1254 (iii) 2.536
25. Simplify: 0.05 * 0.05 * 0.05 +
0.04 * 0.04 * 0.04
26.the
sum of first 20 terms of series is 1/5*6+1/6*7+1/7*8-------------
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|
|
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27.
4.8438 / 0.069.
A.60.2 B.69.2
C.70.2 D.71.2
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28.
|
If
2994 ÷ 14.5 = 172, then 29.94 ÷ 1.45 = ?
|
|
A.
|
0.172
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B.
|
1.72
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C.
|
17.2
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D.
|
172
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29.
|
When
0.232323..... is converted into a fraction, then the result is:
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|
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30.
Which of the following series is in
ascending order
A.5/6,
6/8, 7/9, 11/13 B.11/13, 5/6, 7/9, 6/8
C.6/8,
7/9,5/6, 11/13 D.11/13, 7/9, 6/8, 5/6
