Maths quiz

After how many decimal places, the decimal expansion of 43/2x5 will terminate?

• One decimal place

• Two decimal places

• Three decimal places

• None of the above

Answer explanation

43/2x5 = 43/10

=4.3

Which of the following number is terminating decimal

• $\frac{7}{15}$

• $\frac{121}{150}$

• $\frac{20}{75}$

• $\frac{51}{48}$

If √p is rational, then 'p' must be

• Prime number

• Composite number

• Perfect square

• Odd number

 $LCM\ of\ 3^2\times5^3\ and\ 3^3\times5^2$  

• 3 x 5

•  $3^2\times5^3$  

•  $3^6\times5^6$  

•  $3^3\times5^3$  

LCM of smallest prime and smallest composite number is

• 1

• 2

• 4

• 8

Answer explanation

Smallest prime number= 2

Smallest composite number = 4

A number which is neither prime nor composite

• 3

• 2

• Not determined

• 1

Rational numbers are denoted by

• N

• W

• Z

• Q

1/3 in decimal form

• 0.1111...

• 0.2222...

• 0.3333...

• 0.9999

Which of the following is not irrational

• 3+√7

• 3-√7

• (3+√7) (3-√7

• All of the above

Set A { ....-3,-2,-1,0,1,2,....} _______

• Integers

• Rational number

• Real number

• All of the above