How can you tell a raw egg from a hard-boiled egg?

Manish has to secure 40% marks to pass his B.tech final exams.
He got just 40 marks and failed by 40-marks.

What is the maximum marks?

Sally lives in a place where six months of the year is mild summer and the temperature drops significantly the other six months. She owns a lake where there is a small island. She wants to build a house on the island and needs to get materials there. She doesn’t have a boat, plane, or anything to transport them to the island. How does Sally solve this problem?

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

I am quite hot but become too cold if you remove the first two letters. What am I?

Whats the next number in the below number sequence pattern.

John was running from 40 thieves. John has got 3 gold boxes which weigh as 4kg, 2kg, and 1kg respectively. A witty man asked John to stay with him for seven days in exchange for 1kg gold per day. John needs to stay there for seven days and also do not want to give the witty man any advance. How can John pay for his seven days stay?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

Before Mount Everest was discovered, what was the highest mountain in the world?

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.