Can you show that four added to six will make eleven?

Following number letter sequence has one number/letter missing, find number marked by ?

 12PLOY2?NT?

Assume 9 is twice 5; how will you write 6 times 5 in the same system of notation?

On each row place two letters that can be attached to the beginning of the word to the right to give a longer word. When completed the 10 added letters will give a word reading downwards. What is it?

_ _ AMBER
_ _ THEM
_ _ FENCE
_ _ LIES
_ _ MINES

Can you arrange the following figures in two groups of four figures each so that each group shall add to the same sum?
1 2 3 4 5 7 8 9
If you were allowed to reverse the 9 so as to change it into the missing 6 it would be very easy. For example, 1,2,7,8 and 3, 4,5,6 add up to 18 in both cases. But you are not allowed to make any such reversal.

If the following is true, can you find the value of (13+7)?

9+9=6

2+11=1

12+10=10

Find out the ? in the following number sequence:-

?    5   6   7

12 40 80 100

Numbers are:

751, 853, 981, 532

Which is the od number?

Can you find six five letter words that begin

with ‘A' and end in ‘ING’?

Arrange the words in a meaningful sentence

1. Well-being  2. Status  3. Income  4. Education