There are deer and peacocks in a zoo. By counting heads they are 80. And the number of their legs is 200. How many peacocks are there? 

If you write down all the numbers from 1 to 99, then how many times do you write 3?

If 6 * 9 – 4 = 58 and 3 * 9 – 7 = 34, then in the expression A * 4 – 9 = 91, what is the value of 'A'?

The weights of 4 boxes are 70, 100, 20 and 40 kilograms. Which of the following cannot be the total weight, in kilograms, of any combination of these boxes and in a combination a box can be used only once. 

Ashok's mother was 3 times as old as Ashok 5 years ago. After 5 years she will be twice as old as Ashok. How old is Ashok today? 

If ‘P’ means ‘÷’ and ‘Q’ means ‘+’ and ‘R’ means ‘×’ then Find the value of 16 P 8 Q 9 R 12?

What will be the value of 16 +19 × 51 ÷ 153 – 12 changing the symbols given below?
× and ÷

In a party, if each person shakes hands with all the persons present in the party and the total handshakes will be 66 then the total persons in that party will be -