O is the orthocentre of∆ABC, and if ∠BOC = 110° then ∠BAC will be

If  2x+14x = 1, then the value of  x2+164x2is

If C + 1C = 3, then what is the value of C-37+1C7?

The simple interest on a certain sum of money at the rate of 5% per annum for 8 years is Rs. 840 . Rate of interest for which the same amount of interest can be received on the same sum after 5 years is

A man goes to a place on bicycle at speed of 16 km/hr and comes back at lower speed . If the average speed is 6.4 km/hr in total , then the return speed (in km/hr) is

A basket contains 300 mangoes . 75 mangoes were distributed among some students . Find the percentage of mangoes left in the basket

The selling price of 6 bananas is equal to the cost price of 8 bananas. Then the percentage of profit is

The ratio of number of boys and girls in a school of 720 students is 7 : 5 . How many more girls should be admitted to make the ratio 1 : 1 ?