Exercise

The sign of the product of $21$negative integers and $5$ positive integers is _____.

$-16\times \left(8-10\right)=$_____

Fill in the blank.

$-9+7=7+$(_____)

Simplify the following expression

$\left(-96\right)÷4-\left(-20\right)\left[11-2+\left(5-4\right)\right]$

Shalini, Amber and Anant have dinner together. The bill for the dinner is $₹ 3277.50$. They divide it among themselves.

They have some starters, some drinks and the main course in the dinner. One-third of the bill was for drinks and one-fifth for starters.

What amount is paid for the main course?

Insulin is a hormone made by the pancreas in the human body. It helps to regulate blood sugar level and absorbs glucose to get energy. The number of required units of insulin varies according to the individual. In some cases, an individual body is not able to produce sufficient amount of insulin. For those individuals, supplementary units of insulin are injected into the body.

A doctor uses this formula to calculate the daily insulin units required for Prakhar’s body. Daily insulin requirement (units) $= 0.55 \times$ Total body mass (kilograms)

Prakhar’s body mass is $80 kg$. What is Prakhar’s daily insulin requirement?

In a tank, one-third of the capacity is filled with water. If $50$ litres is drawn from it, the remaining is just two-nineth of the capacity. What is the total capacity of the tank?

Amongst the following, the value of the expression different from other is: