Maths

The HCF of the smallest composite number and the smallest prime number is

• 1

• 2

• 3

• 5

How many prime numbers are between 1 to 100 ?

• 23

• 24

• 25

• 26

¶ (Pie) is a -

• rational number

• irrational number

• composite number

• None of these

If 5 is a zero of the quadratic polynomial x^2 - kx - 15 , then value of k is -

• 2

• -2

• 4

• -4

The sum of two digit number is 9. If 27 is added to it, the digit of number get reversed. The number is -

• 25

• 72

• 63

• 36

The sum of first 16 terms of the AP 10,6,2,....

• -320

• 320

• -352

• 400

The distance of the point P(2,3) from the X - axis is

• 2

• 3

• 1

• 5

• 0

• 1

• -1

• Not defined

If the area of a circle is 154 cm² , then it's perimeter is

• 11 cm

• 22 cm

• 44 cm

• 55 cm

An ogive is useful in determining the

• mean

• mode

• median

• all of these