If 1.5 x= 0.04 y, then the value of (y-x) (y+x) is:
A). 77/73
B). 73/77
C). 83/77
D). 93/77
3. 35%of ?=242
6. What is the sum of the first 25 odd natural numbers?
7. The number of pairs lying between 40 and 100 with their H.C.F as 15 is:
9. What is the HCF 34 × 55 and 32 × 56?
10. In a division sum, the quotient is 120, the divisor 456 and the remainder 333, find the dividend?