A clock strikes once at 1 o'clock, twice at 2 o'clock, thrice at 3 o'clock and so on. How many times will it strike in 24 hours?

The perimeter of a rectangle is 26 cm. The rectangle is converted to a square by tripling the width and taking...

In an examination , 34% of the studens failed in mathematics and 42% failed in English. If 20% of the students...

125 gallons of a mixture contains 20% water. what amount of additional water should be added such that water c...

A box is made in the form of a cube. If a second cubical ox has inside dimensions three times those of the fir...

A Can do a job in 24 days, B in 9 days and C in 12 days. B and C together start the work but leave after 3 day...

In a group of 15, 7 can speak Spanish , 8 can speak French and 3 can speak neither . What fracton of the group...