Question

4. The average of the numbers 73, 77, 79, 76, 74, and 7* is 76. What is the digit
in place of * ?
(1) 5 (2) 6 (3) 7 (4) 8​

Answer 1

Answer:

Guess you have skipped a number in d sequence.. That's 82 btw..

So, the sequence goes like.. 77,78,77,81,73,82,55,..

the logic is +1^2,-1^3,+2^2,-2^3,+3^2,-3^3

1^2--->1*1 [1 square 2]

......

......

3^3--->3*3*3 [3 cube 3]

77+ 1^2 =78..

78 - 1^3 =77..

77 + 2^2=81..

81 - 2^3=73..

73 + 3^2=82..

82 - 3^3 =55..

55 + 4^2 = 71..

So, the required answer is 71..

You can follow the same sequence for other terms..

Hope that helps.. ☺️

Answer 2

Step-by-step explanation:

ans option (3) 7

first of all

73,77 ,79, 76, 74,7* / 6 =76 /1

cross multiply

73, 77, 79, 76, 74, 7* = 456

now add all five number by leftting the(7*) number

and comes = 379 ,7* =456

transposing method

7* = 456 - 379

7* = 77

so and will be option (3) 7