Solve the mathematical equation in the picture below.

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?

I am sure no one can have two things for dinner. what are they?

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 is in seasons, seconds, centuries and minutes but not in decades, years or days?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

Find the hidden tiger in the given optical illusion ?

Which Number is the odd one out?

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

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?