The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

Rose, Lily and Jasmine decided to buy flowers for their moms on Mother's Day. One of them bought lilies, the other roses, and the third one jasmines.
'It's funny!' said the girl with roses, 'we bought roses, jasmines and lilies, but none of us bought the flowers matching her name'.
'You're right!', said Lily.
What kind of flowers did each of the girls buy?

Solve the mathematical equation in the picture below.

Can you find the company name in the pictogram below?

Using the clues below, what four numbers am I thinking of?

The sum of all the numbers is 31.
One number is odd.
The highest number minus the lowest number is 7.
If you subtract the middle two numbers, it equals two.
There are no duplicate numbers.

By what process could you make a 'Tea-Table' into food?

Can you solve the maths in the below-given picture equation?

_ _ _ IE _ _
_ _ _ IE _
_ _ IE _ _
_ _ IE _
_ _ _ _ IE

Like you see, some letters have gone missing from these words that contain the IE pair at some or the other place. The letters that will be used to fill the blanks are given below. Use them and form meaningful words. Can you do that?

A, C, D, F, H, K, L, M, N, N, O, R, R, S, S, S, T, T, Y and Y.

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?