Question

-6
a
All questions are compulsory
This question paper is divided into four sections.
Marks are mentioned in the front of each question.
SECTION-A
Q.1 Choose the correct option
A. For a non zero rational number a, (a')?is equal to
I a
iii a
ival
B. What least number must be added to 521 to make it a perfect square
13
ii-4
iii5 iv
C. By what least number should 1536 be divided to get a perfect cube?
i 8
ii 3 iii 4
iv 6
D. If 64y8 is exactly divisible by 3, then the least value of y is
i3
ii 6
iii 9
iv 2
E. If x+1/x =5, then x²+1/x?=?
i 25
ii 27
iii 23
iv 24
F. pg' +(p-1)-1=?
I (pq+1)(-1) ii p(q+1)(7-1) iii q(p-1)(2+1) iv (pq-1)(+1)​

Answer 1

Answer:

All questions are compulsory

This question paper is divided into four sections.

Marks are mentioned in the front of each question.

SECTION-A

Q.1 Choose the correct option

A. For a non zero rational number a, (a')?is equal to

I a

iii a

ival

B. What least number must be added to 521 to make it a perfect square

13

ii-4

iii5 iv

C. By what least number should 1536 be divided to get a perfect cube?

i 8

ii 3 iii 4

iv 6

D. If 64y8 is exactly divisible by 3, then the least value of y is

i3

ii 6

iii 9

iv 2

E. If x+1/x =5, then x²+1/x?=?

i 25

ii 27

iii 23

iv 24

F. pg' +(p-1)-1=?

I (pq+1)(-1) ii p(q+1)(7-1) iii q(p-1)(2+1) iv (pq-1)(+1

Step-by-step explanation:

hhh