What Deficiency does the below rebus represent?

VIT_MIN

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Take one out and scratch my head, I am now black but once was red. What am I?

On the occasion of Diwali, online seller companies in India are offering a big discount on Iphone14 as below.

: Flipkart offers a Flat 65% discount
: Amazon offers a 10% discount over and over again.
: Shopclues offers RS.45,000 off.

If the original cost of the iPhone is Rs.70,000 Which is the best offer for you?

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.

Prove that the below maths equation is true.

8 + 8 = 91

I ask Joseph to pick any 5 cards out of a deck with no Jokers.

He can inspect then shuffle the deck before picking any five cards. He picks out 5 cards then hands them to me (Jack can't see any of this). I look at the cards and I pick 1 card out and give it back to Joseph. I then arrange the other four cards in a special way, and give those 4 cards all face down, and in a neat pile, to Jack.

Jack looks at the 4 cards i gave him, and says out loud which card Joseph is holding (suit and number). How?

The solution uses pure logic, not sleight of hand. All Jack needs to know is the order of the cards and what is on their face, nothing more.

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 ?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

Can you place three balls such that the equation shown in the picture holds true?