How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

A gardener planted the Lemon trees in a mathematical ordered way (i.e. he planted a tree in rows).
He created a total of 19 rows of trees.

Note: There should be more than 2 trees to count as a row.

What is the minimum number of trees required by the gardener to have 19 rows of trees?

A thief enters a store and threatens the clerk, forcing her to open the safe. The clerk says, “The code for the safe is different every day, and if you hurt me you’ll never get the code.” But the thief manages to guess the code on his own. How did he do it?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

Count the squares in the matchstick puzzle below?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

Rihana, Peeta, and Logan order a pizza for $10. Out of the three, Rihana and Peeta were quite hungry and ate 6 slices a piece, while Logan had just 2 slices.

Now, they want to split the cost among them fairly but due to the lack of change, they decide to round off the cost to the nearest possible dollar.

Can you find out the fairway which should be used to split the money?

What if the pizza was worth $11?

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?

A Child was born in Lahore, Pakistan. Still, the child is not a Pakistani citizen. why?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?