Question 1. If ∆ means multiply the first number by second, then (3 ∆ 5) ∆ 2 = ?
Question 2. Nil is 23 years 1 month old, Shelly is 18 years 7 months old and Ben is as much older than Shelly is younger than Nil. The age of Ben is ……. .
Question 3. If the number X 78 Y is divisible by 55 then value of X and Y are:
Question 4. Fill in the blanks; 4, 6, 12, 14, 28, 30, (?)
Question 5. Three bells toll at the intervals of 10, 15 and 24 minutes. All the three begin to toll together at 8 A.M. At what time they will again toll together?
Question 6. SiWhat temperature at Celsius scale is equal to 300°K.
Question 7. In your bookshelf, you have five favorite books. If you decide to arrange these five books in every possible combination and moved just one book in every half a minute. How much time it will take you to arrange?
Question 8. Each edge of a cube is increased by 50%. What will be the percent increase in its volume?
Question 9. The diagonals of a rhombus are 30 cm and 40 cm long. Find its side.
Question 10. The number which is neither prime nor composite is ……. .