How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

What word does this rebus represent?

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How far can you walk into the woods?

What begins with T, ends with T, and has T in it?

John is found dead in his office at his desk. The police have narrowed the suspects down to three people: Mrs. Jacob, John’s wife Hena and his business partner Jason . All three visited John on the day of his murder, but all three provide the police with stories of explanation as to the reason for their visit.
Police found John with his wrist watch still on his right arm, a torn up picture of his wife laying on the floor beside the trash can, and an ink pen in his right hand. On the desk, the police found a name plate, a telephone that was off the hook, and a personal calendar turned to the July 5th page with 7B91011 written on it. After examining this evidence, the police knew their suspect. Who was it ?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

One day, I thought of ways that can be used for creating a palindrome. So I decided that I will turn into a larger number by adding the reversed digits to the original number and keep doing it till I finally obtained a palindrome.

I am not sure if this process will always result in a palindrome eventually but I was able to produce a four-digit palindrome. Can you guess my starting number?

You know three triplets: Frank John and Wayne (need to return your money). Frank always tells the truth while John and Wayne always lie. You meet one of them on the road and can ask him a three-word question.
Which question, will you ask?