Ravi took a number -12 instead of +12, how much the less he took?

Sachin recorded the temperature as -12^@C instead of +12^@C . what is the variation of the temperature?

The price of 2 sarees and 4 shirts is Rs. 1600. With the same money one can buy 1 saree and 6 shirts. If one wants to buy 12 shirts, how much shall he have to pay ?

Sonu went to a shop. He wanted to buy a chiki and a toffee. One chiki costs ₹ 0.75 and a toffee costs ₹ 0.50. If he buys one each of them how much he has to pay to the shopkeeper. Sonu's mother gave him ₹ 2. He gave it to shopkeeper and bought items of ₹ 1.25. How much he will get in return ? Suppose if his mother gave her ₹ 5 then how much will the shopkeeper return ?

If a person gains or loses an amount equal to the number appearing when an unbiased die is rolled once, according to wether the number is even or odd, how much money can he expect per game in the long run ?

The mean and standard deviation of 100 observations were calculated as 40 and 5.1, respectivey by a student who took by mistake 50 instead of 40 for one observations. The correct standard deviation is

The atomic mass of an element is 24 and its atomic number is 12. Show how the atom of the element is constituted?

Yadaiah for his family needs borrowed Rs 5120 at 12(1)/(2)% per annum compounded annually. How much amount he has to pay to clear the debt at the end of two year nine months? Also find total how much interest he has paid?

Yadalah for his family needs borrowed ₹5120 at 12% per annum compounded annually. How much amount he has to pay to clear the debt at the end of two year nine months? Also find total how much Interest he has paid?

Ramu bought a T.V for ₹10,000 and sell it at a profit of 20%. How much money do he get for it?

Krishna Kishore took one number.If he subtracts 7 from the 5/2 th value of the number, he gets 11/2 as result then the number is_________