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SSC CHSL 2021 objective Ques (108 results)
61)

What is the coefficient of y2 in the expansion of (√2y2 - 5√3)3?

SSC CHSL 2021
A)

-30√3

B)

225√2

C)

30√3

D)

-225√2

62)

If x - y = 4 and x3 - y3 = 316, then the value of x4 + y4 is:

SSC CHSL 2021
A)

2248

B)

2284

C)

2428

D)

2482

63)

Simplify the following expression.
(2a - b - 3c)(4a2 + b2 + 9c2 + 2ab + 6ac - 3bc)

SSC CHSL 2021
A)

8a3 + b3 + 27c3

B)

8a3 - b3 - 27c3 + 18abc

C)

-8a3 + b3 + 27c3

D)

8a3 - b3 - 27c3 - 18abc

64)

If a + b - c = 0, then what is the value of \(\frac{(b-c)^2}{4bc}\frac{(c-a)^2}{4ca}\frac{(a+b)^2}{4ab}\)?

SSC CHSL 2021
A)

\(-\frac{1}{2}\)

B)

\(\frac{1}{64}\)

C)

\(\frac{3}{4}\)

D)

\(-\frac{3}{4}\)

65)

If x - y = 4 and xy = 3, then what is the value of x3 - y3?

SSC CHSL 2021
A)

64

B)

100

C)

28

D)

88

66)

If (2a + 3b) (2c - 3d) = (2a - 3b) (2c + 3d), then:

SSC CHSL 2021
A)

\(\frac{b}{a}=\frac{c}{a}\)

B)

\(\frac{a}{b}=\frac{c}{d}\)

C)

\(\frac{a}{d} = \frac{c}{b}\)

D)

\(\frac{a}{b} =\frac{d}{c}\)

67)

If \((x^2+{1\over49x^2})=15{5\over7}\), then what is the value of \( \left(x+\frac{1}{7x}\right)\)?

SSC CHSL 2021
A)

7

B)

± 7

C)

4

D)

± 4

68)

If a + b + c = 2 and ab + bc + ca = -1, then the value of a3 + b3 + c3 - 3 abc is:

SSC CHSL 2021
A)

10

B)

14

C)

2

D)

5

69)

If x4 - 12x2 + 1 = 0, then what will be the value of \(x^4+\frac{1}{x^4} \)?

SSC CHSL 2021
A)

144

B)

10

C)

146

D)

142

70)

If \({x-{1\over x}}=2\sqrt2\), then what will be the value of \( x^3-\frac{1}{x^3}\) ?

SSC CHSL 2021
A)

10√2

B)

20√2

C)

12√2

D)

22√2

showing 61 - 70 results of 108 results

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