ABHYAS | Self Learning | Testing Platform

Q.1

Deven said , "If you add -3 to my sister's age, you will get my age". If Deven is 12 years old, how old is his sister ?

A.

15 years

B.

18 years

C.

17 years

D.

12 years.

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Q.2

Sum of the digits of a two digit number is 9. When we interchange the digits, it is found that the resulting two digit new number is greater than the original number by 27. Then the two digit number is

A.

63

B.

36

C.

45

D.

54

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Q.3

Find the value of discriminant for the equation $x^2+7x+12=0$

A.

-1

B.

97

C.

1

D.

None of these

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Q.4

Find the value of discriminant for the equation $x^2+x+1=0$

A.

3

B.

-3

C.

1

D.

None of these

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Q.5

Find the nature of the roots of $x^2+7x+12=0$

A.

:Roots are real and equal

B.

Roots are imaginary or complex.

C.

Roots are real and unequal

D.

None of these

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Q.6

A number is multiplied by $large frac{1}{3}$ times itself and 18 is added to the result. If the final result is 2901, the number is _________________

A.

54

B.

93

C.

83

D.

84

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Q.7

Express the following as the product of two factors: $large 4x^2+12x+9$

A.

(2x+3)(2x-3)

B.

(2x-3)(2x-3)

C.

(2x+3)(2x+3)

D.

(2x-3)(2x+3)

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Q.8

Factorise $large dpi{100} fn_phv x^2-xy+y-x$ :

A.

(x-1) (x+y)

B.

(x+1) (x+y)

C.

(x-1) (x-y)

D.

none of these

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Q.9

The sum of two numbers is 90 and the greater number exceeds thrice the smaller number by 14. The number is _______________

A.

18, 72

B.

19,71

C.

20,70

D.

15,75

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Q.10

Factorize: $16a^2b-64b^3$

A.

13b(a+2b)(a-2b)

B.

16b(a+2b)(a-2b)

C.

12b(a+3b)(a-3b)

D.

11b(a+2b)(a+2b)

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Attention !!!!!