If Rajina's daughter is my daughter's mom, who am I to Rajina?

Find the next number in the series below.

6 18 270 72090 ?

Given that

(78)^9 = 6
And (69)^4 = 11

Can you find out

(99)^2 =?

(Note: This is Logical, not Mathematical)

Keyboard words are not in alphabetical order, Why?

A man looks at a painting in a museum and says, “Brothers and sisters I have none, but that man’s father is my father’s son.” Who is in the painting?

what does the below math rebus puzzle mean?

A car key is hidden in the picture. Can you spot it.? Quickly test your eye power now!

A leopard is hiding in plain sight in the bushes. Only the sharpest eyes can spot the elusive cat. Can you? Test your eye power now!

Find the missing value of "?" in the letter sequence below.

CAD
EBG
KBM
OCR
DDH
NL?

Find the mistake in the below maths equations

A = 2
A(A-1) = 2(A-1)
A2-A = 2A-2
A2-2A = A-2
A(A-2) = A-2
A = 1