A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

I’m tall when I’m young, and I’m short when I’m old. What am I?

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?

Without looking at a calendar, within a minute name, a boy's name using 5 consecutive 1st letters of 5 consecutive months

If 1+9+8=1, what is 2+8+9?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

Can you count the number of children in the picture below

What number divided by 4 is the same as that number minus 4?

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?