Question

BRAIN TEASER!!!!
Try to solve the RIDDLE!!!!
I am gone mad after reading this please try to help I will mark it has brain list for the appropriate answer

Answer 1

Suppose there are 10 students and 10 lockers..
then the no. of closed lockers =7
$(7 \times 1 + 0 = 7)$
If there are 20 students and 20 lockers , then no. of closed lockers =16
$(7 \times 2 + 2 = 16)$
Similarly taking 30 lockers and 30 students , no. of closed lockers =25
$(7 \times 3 + 4 = 25)$
Therefore, for 1000 lockers and 1000 students, no. of closed lockers =
$(7 \times 100 +198) = 898$
so my answer is (D)-none of these