The difference between the greatest and the least four-digit numbers that begins with 3 and ends with 5 is: 

What value will come in place of question mark (?) in the questions given below?

(4425÷25) ×(8.5×16) = ?

A regular hexagon has a side of 4 cm. Find its area. (in sq. cm)

In 16 minutes, the minute had gains over the hour hand by

Sum of A’s and B’s age 6 years ago is 88. A’s age 18 yrs ago is equal to B’s age 6 years ago. Find the age of A two year hence?

If Tan⁴x – Tan²x=1 then the value of Sin⁴x + Sin²x is__

A boat takes 16 minutes and 24 minutes to cover a certain distance downstream and upstream, respectively. If the speed of the boat in still water is 15 km/h, find the speed of the stream.

The sum for 2 years gives a compound interest of ₹ 3225 at 15 % rate. Then sum is