What famous saying does this rebus mean?

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Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

I am the fastest animal but cannot climb the tree. What am I?

There are seven sisters in a house in a village where there is no electricity or any gadget.

Sister-1: Reading Novel
Sister-2: Cooking
Sister-3: Playing Chess
Sister-4: Playing Sudoku
Sister-5: Washing clothes
Sister-6: Gardening

what is Sister-7 doing ?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

When 99 is considered higher than 100?