How many ordered pairs of positive integers can satisfy the equation 1/x + 1/y = 1/9
The product of all the factors of a number N is equal to the tenth power of the number. Which of the following cannot be a factor of N ?
(Approach please)
- 210
- 90
- 200
- 126
0 voters
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1. If 4x + 7y = 18, then find the maximum value of x^4.y^5. 2. If x^2.y^3 = 2^2.3^6.5^2, find the minimum value of 3x+5y. 3. Find the maximum value of (x-6)^2 (11-x)^3 for 6<=x<=11. 4. Find the minimum value of (6+x)(12+x)/(4+x) (x>-4).
A Line segment XY has been divided into 5 congruent segments and a semicircle have been drawn on each part. But Suppose XY were divided into millions of congruents segments and semicirlces were drawn ,what would be the sum of lengths of the arcs be ?
1)2XY
2)5XY
3)XY
4)3XY
5)NOT
Q.Consider a quadratic equation ax^2 + bx + c = 0. If a, b, and c are selected by throwing a fair die, what is the probability that the equation has real roots? 1) 43/216
2) 39/216
3) 27/216
4) None of These
6 men and 2 boys can complete a work in 9/4 days. No of days taken by 5boys to complete same work is 4 more than 3 Men. Efficiency of boy is what percent to men?
Solve the inequalities which hold simultaneously: 4x+17<33 and 8x-12<36.
Ankush scored marks in the ratio 3:4:7, in three sections of a test. If the maximum marks in these sections in the same order is 2:2:2, find the maximum aggregate % he could have scored ?
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How to find last two digit 3^400
Q. x4 – 4x3 + ax2 – bx + 1 = 0 has positive real roots. What is the maximum possible value of a + b?
Approach?
Q35 pls
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CAT aspirant
Find the sum of all the fou digit numbes which are formed by the digits 1,2,5,6.
1. If (1/2x-1)>3 /x, where x>0, find the range of x. a) (0,5) b) (1,3) c) (2,5) d) (1/2, 3/5) 2. Solve 5/√(4-x) -√(4-x) < 4. a) (4, infinity) b) (3, infinity) c) (-infinity, 3) d) (-3, infinity) 3. What are the real values of X that satisfy the equation 2x^2 + 10x + 17 <0 a)(-4, -1) b) (4, infinity) c) { } d) (-infinity, 0)