Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

After teaching his class all about Roman numerals (X = 10, IX=9 and so on) the teacher asked his class to draw a single continuous line and turn IX into 6. The teacher's only stipulation was that the pen could not be lifted from the paper until the line was complete.

Can you decipher these quotes by Albert Einstein?
Blf xzm mvevi hloev z kilyovn lm gsv ovevo lm dsrxs rg dzh xivzgvw.

I have Rs.50 and I spend it in the way as below.

There is something which is always coming but never arrives?

If in a code language, DISTANCE is written as IDTUBECN and DOCUMENT is written as ODDVNTNE, the how will THURSDAY be coded as in the same language?

Find the hidden tiger in the given optical illusion ?

It is an eleven letter word.
The first, second, third and fourth letters form a banquet's name.
The fifth, sixth and seventh letters form a car's name.
The eighth, ninth, tenth and eleventh letters form a mode of transport.

Can you identify what word it is?

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135