Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

Which five letter word can be added at the end of below word to form a
valid word?

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Birbal was jester, counsellor, and fool to the great Moghul emperor, Akbar.
The villagers loved to talk of Birbal's wisdom and cleverness,
and the emperor loved to try to outsmart him.
One day Akbar (emperor) drew a line across the floor.
"Birbal," he ordered, "you must make this line shorter, but you cannot erase any bit of it."
Everyone present thought the emperor had finally outsmarted Birbal.
It was clearly an impossible task.
Yet within moments the emperor and everyone else present had to agree that Birbal had made the line shorter without erasing any of it.
How could this be?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

You need to arrange three 7 and mathematical symbols to form number 1?

You can see three almost identical images below. Can you spot the odd one out from them?

What goes up but never comes down?

Can you spot the hidden girl in the picture below?

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?

What can you deduce from the following BrainBat?

CRY
LMKI