People make me, save me, change me, raise me. What am I?

Can you write down eight eights so that they add up to one thousand?

The sum of a mother, her baby and her dog's weight is 170 Kg. How much does the baby weigh if the mother weighs 100 kg more than the combined weight of the baby and the dog, and the dog weighs 60 per cent less than the baby?

Spot what is wrong here in below Picture?

2, 3, 5, 9, 17, _ What is the next number in the sequence?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

Which wheel of car does not rotate when you turn your car right?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

A bridge is about to collapse. There are four people P, Q, R and S on one of the sides. Before the bridge collapses, they want to cross it. Now since the bridge is too weak, it can only stand the weight of two people at a time. Also, it is night time and nothing is visible. They have just one torch with them.

Now P takes one minute to cross the bridge, Q takes two minutes to cross, R takes five minutes to cross and S takes ten minutes to cross.

The bridge will collapse in seventeen minutes. How will they be able to cross the bridge before it collapses?

A prisoner is told: "If you tell a lie, we will hang you and if you tell the truth, we will shoot you." What did the prisoner say to save himself?