What is the value of a-b when a2+b2-6a-6b+18 = 0 ?

The sum of two numbers is 25 and sum of their square is 313. Calculate the numbers.

Find the value of 491321973

In the question, a word is represented by only one set of numbers as given in any one of the alternatives. The sets of numbers given in the alternatives are represented by two classes of alphabets as in two matrices given below. The columns and rows of Matrix I are numbered from 0 to 4 and that of Matrix II are numbered from 5 to 9. A letter from these matrices can be represented first by its row and next by its column, e.g., 'E' can be represented by 14, 31, etc. and 'R' can be represented by 78, 89 etc. You have to identify the set for the word 'LAND'.

Which of the following cube in the answer figure cannot be based on the unfolded cube in the question figure?

If a mirror is placed on the line MN, then which is the right image of the given figure?

In the following question, four groups of three numbers are given. In each group the second and third number are related to the first number by a Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

In the following question, select the missing number from the given series.

64, 73, 83, 94, ?, 119