The difference between a number and the square root of the number is 2. The number is:

If sin²θ - 3sinθ + 2=0, the find the value of θ(0⁰≤ θ≤90⁰)

if $${{5x-7}\over 3}+2={{4x-3}\over 4}+4x$$, then the value of (8x+5) is

If (10 a³+4b³):(11a³-15b³)=7:5, then (3a+5b):(9a-2b)=?

(49)¹⁵ – 1 is exactly divisible by: 

The item costing Rs. 840 was sold by A shopkeeper at a gain of 10% and it was again sold by the new buyer at the loss of 5%. find the selling price of the item is

A wateh dealer pays 10% customs duty on a watch which costs Rs. 500 abroad. He de- sires to make a profit of 20% after giving a discount of 25% to the buyer. The marked price should be

If the price of a commodity is decreased by 20% and its consumption is increased by 20%, what will be the increase or de- crease in the expenditure on the commodity?