google.com, pub-2985501598867446, DIRECT, f08c47fec0942fa0

Real Number Class 10


Que 1

If a= x⁴y²,b= x²y³ then LCM (a,b) is

a) x⁸y⁶

b ) x⁶y⁵

c) x⁴y³

d) none of these

Ans ( c)


Que 2

If LCM (32,a) = 64 and HCF (32,a) = 4 then value of a is

a) 16

b ) 8

c) 20

d) 10

Ans (b)


Que 3

Three bells rings at intervals 5,3,15 minutes. All three rang at 10 am when will they ring again together

a) 10:10 am

b) 10 :15 am

c) 10: 20 am

d ) none of these

Ans ( b )


Que 4

HCF of two numbers is 4 their product is 160 LCM is

a) 40

b) 60

c) 80

d) 120

Ans (a)


Que 5

Find least number that is divisible by all numbers from 3 to 7 ( both numbers included)

a) 400

b) 410

c) 420

d) 430

Ans ( c)

Que 6

What is smallest number must be multiplied and denominator so that the decimal number 14588/625 will be terminated

a) 4

b)18

c) 16

d) 20

Ans (c)


Que 7

If x² = ( 1+ 2/36. + 5/ 6) then value of x is

a) irrational

b) rational

c) whole

d) integer

Ans (a)



Que 8

Prime factors of denominator of a rational number with decimal expansion 62.47 are

a) 2 and 35

b) 2 and 5

c) 3 and 5

d) 4 and 5

Ans ( b)



Que 9

The decimal expansion of rational number 53/2³×5. will terminate after how many decimal

a) 1

b) 3

c) 4

d) 2

Ans ( b)



Que 10

The decimal number of (21/8 +7/40) terminates after how many places

a) 2

b) 1

c) 3

d) 4

Ans ( b)


Que 11

The smallest number by which 1/17 should be multiplied so that decimal expansion terminate after one decimal place

a) 17/100

b) 17/10

c) 100/17

d) 10/17

Ans ( b)

Solution

Wed Jan 11, 2023

Choose your courses

Sonika Anand Academy Follow me on Graphy
Watch my streams on Graphy App
Sonika Anand Academy 2023 Privacy policy Terms of use Contact us Refund policy