The sum of two numbers is 84 and their HCF is 12. Total number of such pairs of number is 

The HCF of two numbers 12906 and 14818 is 478. Their LCM is:

Mohan gets 3 marks for each correct sum and loses 2 marks for each wrong sum. He attempts 30 sums and obtains 40 marks. The number of sums solved correctly is:

Find the greatest number which will exactly divide 200 and 320. 

Sita and Gita enter into a partnership, Sita contributes 5000 while Gita contributes 4000. After 1 month, Gita withdraws $$ {1\over4}$$ part of her contribution and after 3 months from the starting , Sita puts 2000 more . When Gita withdraws her money, Rita also joins them with 7000. If at the end of 1 year, there is a profit of 1218, what will be the share of Rita in the profit? 

If 10 men or 20 women or 40 children can do a piece of work in 7 days, then 5 men, 5 women and 5 children together can do half of the work in 

Sides of a triangle are 13 cm, 84 cm and 85 cm. Find its area(in square cm)?