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If a and b are prime numbers, which of the following is true?
Answer is (c).
Answer is (c).
See lessIf 7x+6y=420, x and y are natural numbers, then what can be said about x?
Answer is (b).
Answer is (b).
See lessIf a, b, c, d, p and q are non- zero, unequal integers and (a+bi) /(c+di)=p/q, then (a²+b²)/(c²+d²) equals
Answer is (b).
Answer is (b).
See lessAn Egyptian fraction has a numerator equal to 1, and its denominator is a positive integer. What is the maximum number of different Egyptian fraction such that their sum is equal to 1, and their denominators are equal to 10 or less?
Answer is (a).
Answer is (a).
See lessWhat is the least number which must be subtracted from 1936 so that the remainder when divided by 9,10,15 will leave in each case the same remainder 7?
Answer is (d).
Answer is (d).
See lessWhat is the greatest number consisting of six digits which on being divided by 6,7,8,9,10 leaves 4,5,6,7,8 as remainders respectively?
Answer is (b).
Answer is (b).
See lessWhat is the least number which on being divided by 5,6,8,9,12 leaves in each case a remainder 1 but when divided by 13 leaves no remainder?
Answer is (b).
Answer is (b).
See lessA group of four numbers has only one prime number amongst them. Which of the following must be true about the group?
Answer is (a).
Answer is (a).
See lessIf (a, n)! is defined as product of n consecutive numbers starting from a, where a and n are both natural numbers, and if H is the HCF of (a, n)! and n!, then what can be said about H?
Answer is (b).
Answer is (b).
See lessHCF and LCM of two numbers is given. It is possible to find out the two numbers uniquely if
Answer is (d).
Answer is (d).
See less