How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

There is a brick of gold and a brick of iron in a boat (both 10-inch blocks), if they are both dropped into the water which will make the water level higher?

James Bond is caught up in a mysterious scenario where the evil villain has him blindfolded. He somehow breaks through the handcuffs but is unable to get the blindfold off. Upon searching, he comes across a bow and 3 arrows. He can hear the villain speak, and thus tries to take a shot at him. He launches the first arrow, it misses the villain. He then launches the second arrow and it misses by a greater margin.

What is the probability that this third shot our James bond takes will be worse than the second shot?

Which is faster, Heat or Cold ? Explain.

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

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

I am lying and I always lie. Tell me whether I am lying or telling the truth.

A 52% bias toss for head using the 51% tail bias coin was done to obtain a fair result.

Can you find how bias is the floor in this case?

What can go up a chimney down, but can’t go down a chimney up?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?