A decorative toy is made up of a solid cube with an inverted hemisphere surmounted totally on its top. The edge of the base cube is 5 cm and the circular base of the hemisphere fixed on the top has a diameter of 4.2 cm. If the entire surface of the toy is to be painted at the rate of Rs. 2 per cm², the approximate cost of painting is Rs.

Find the Highest Common Factor (HCF) of 372, 732 and 2196.

If the HCF of the expressions (x + 3) (2x² – 3x + a) and (x – 2) (3x² + 10x – b) is x² + x – 6, then what is the value of (2a – 3b) ?

The sum of two numbers is 1580 and their LCM is 18816. Find the two numbers.

Reduce $$\frac {295} {565}$$​ to lowest form using HCF

Find the HCF of 3/4, 5/6, 7/8.

Three bells start ringing after interval of 20 minutes, 25 minutes and 40 minutes. They ring simultaneously at 8:00 am. They will ring simultaneously again at

Three bells start ringing after interval of 20 minutes, 25 minutes and 40 minutes. They ringsimultaneously at 8: 00 am. They will ring simultaneously again at :

The HCF and the LCM of two numbers are 4 and 2600, respectively. If one of the numbers is 104, find the other one.

The largest four-digit number which when divided by 9, 18 and 23, leaves a remainder 5 in each case, is:

The greatest number, which divides 1938 and 2337 to leave 0 and 3 respectively as remainders, is: