-If the sum and difference of two numbers are 20 and 4, then the product is

Related MCQs

• -The product of two positive numbers is 120 and the sum of their square is 289. The difference between them is
• -Two numbers are in the ratio of 5:8. If 9 be added to each, are in the ratio of 8:11. The numbers are
• -The mean of ten observations is 23. If two observations 4 and 7 are substituted by 3 and 8, then the new value of mean will be
• -A man is five times as old as his son, and the sum of the squares of their ages is equal to 2106, find their ages
• -What would be the total accumulated amount in 5 years if the sum of Rs. 10,000 is deposited in the bank at an interest rate of 6% per annum compounded monthly
• -The present ages of three persons are in proportions 4:7:9. Eight years ago, the sum of their ages was 56. Their present ages are
• -If the fractions 5/6, 7/8, 6/7 and 8/9 are arranged in descending order then the correct sequence is:
• -The mean of 10 observations is 21. If each observation is multiplied by 4 and 5 is subtracted from each of them, then the mean will be
• -If √p+√q=16 and √p-√q=8, then the value of p/q is
• -The mean of 100 items was found to be 40. If at the time of calculation two items were wrongly taken as 36 and 32 instead of 54 and 34, the correct mean is