If x, y and z are natural numbers such that x
plz share the approach
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- non
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The number of positive integer valued pairs(x,y) satisfying 4x-17y=1 and x
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- 58
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- 59
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Let a,b,c be distinct digits. Consider a two digit number 'ab' and a three digit number 'ccb', both defined under the usual decimal number system, if(ab)^2=ccb and ccb>300, then the value of b is
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In four digit number sum of first two digits is equal to that of last 2 digits. The sum of first and last digit is equal to 3 digit. Finally , the sum of the second and fourth digits is twice the sum of the other 2 digits. What is third digit of the number.
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A number has exactly 32 factors out of which 4 are not composite. Product of these 4 factors(which are not composite) is 30. How many such numbers are possible?
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- Not possible.
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1000^7-17 is written in decimal notation. What is the sum of its digits?
- 183
- 182
- 181
- none of these
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Atul is given Rs. 158 in one-rupee denominations. He asked to allocate them into number of bags such that any amount required between Rs. 1 and Rs. 158 can be given by handling out a certain number of bags without opening them.What is the minimum number of bags required?
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All possible seven-digit numbers in base 2 ( binary ) having four 1s and three 0s. What is the sum of all such numbers?
- 1470
- 1615
- 1740
- 1910
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first we increase the denominator of a positive fraction by 3 and then decrease it by5. the sum of the resulting fraction proves to be equal to 19/42. find the denominator of the fraction if its numerator is 2.
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- 12
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find the sum of all 2 digit no. that give the remainder 3.when they are divided by 7.
- 656
- 686
- 676
- 666
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N=123123123....300 digits. Find the remainder when N is divided by 504?
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- none of these
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Find the remainder when 2^164 is divided by 164?
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- 16
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[ (81!+91!)^2-(81!-91!)^2]/81!*91!.......simplify it?
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Hi.how to find number of even factors of a number
rem: (7^50)/90
post solution too
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- 243
- 49
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n^2 has 11 factors less than n. In how many ways can n^3 can be written as a product of 2 distinct no.
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- 33
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0 voters
If a four digit number “abcd” is divisible by 4 and another four digit number “acbd” is divisible by 8 then what is the minimum value of a+b+c+d ?
(A) 33
(B) 34
(C) 36
(D) None of these
pls explain the approach too
how many factors of 1800 are divisible by 10???
a) 1800 b) 180 c) 18 d) 8
From a no series a student deletes a no and finds that the average of remaining no's is 35+7/17. find how many no's were there originally and which no was deleted?
please tell the approach!!!