Showing posts with label numbers. Show all posts
Showing posts with label numbers. Show all posts
Monday, June 27, 2016

numbers

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How many 4 digit nos.are there that is divisible by 29 and the sum of digits are equal to 29.
Saturday, December 12, 2015

position in class - STD VI

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If in a class of 37 students the place of Nanu and Bhanu are 10th and 16th respectively, what are their places from the last? A. 27th an...
Saturday, June 20, 2015

Singapore maths Olympiad

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Let a,b,c,d be real numbers such that a 2 + b 2 + 2a – 4b + 4 = 0 and c 2 + d 2 – 4c + 4d + 4 = 0. Let m and M be minimum and Maxim...

Singapore maths olympiad, number

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If a 1 , a 2 , a 3 , .............. a 2011 are positive integers such that (a 1 + a 2 + .....a 2011 ) = a 1 .a 2 .....a 2011 Then fi...

Singapore maths Olympiad

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Find the largest positive integer ‘n’ such that (n + 10) is a divisor of n 3 + 2011

Singapore maths Olympiad, Numbers

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Let 'n' be the smallest positive integer such that the sum of its digits is 2011. how many digits does 'n' have?

Singapore maths Olympiad

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If x = 10000..................................0001000.............................00050                       2011 times                  ...
Monday, April 20, 2015

algebra

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Find the value of: (64 - 12) 2  + 4 x 64 x 12 = ? A. 5246 B. 4406 C. 5126 D. 5776

divisibility

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How many 3 digit numbers are completely divisible 6 ? A. 146 B. 148 C. 150 D. 152
Monday, March 2, 2015

Numbers

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Find 4 consecutive prime numbers that add up-to 220.
Thursday, February 12, 2015

fun with numbers

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Remembering Ramanujam 1 x 9 + 2 = 11 12 x 9 + 3 = 111 123 x 9 + 4 = 1111 1234 x 9 + 5 = 11111 12345 x 9 + 6 = 111111 123456 x 9 + 7 ...

fun with numbers

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Remembering Ramanujam more with numbers 9 x 9 + 7 = 88 98 x 9 + 6 = 888 987 x 9 + 5 = 8888 9876 x 9 + 4 = 88888 98765 x 9 + 3 = 888...

fun with numbers

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Remembering Ramanujam more on interesting numbers 1 x 1 = 1 11 x 11 = 121 111 x 111 = 12321 1111 x 1111 = 1234321 11111 x 11111 = 1...

numbers

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Remembering Ramanujam Fun with numbers --- note the symmetry 1 x 9 + 2 = 11 12 x 9 + 3 = 121 123 x 9 + 3 = 12321 1234 x 9 + 4 = 123432...

numbers

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10th was the BD of Ramanujam to remember him here is some interesting symmetry in numbers 1 x 8 + 1 = 9 12 x 8 + 2 = 98 123 x 8 + 3 =...
Tuesday, February 10, 2015

numbers

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The number 142857 has the remarkable property that multiplying it by 1, 2, 3, 4, 5, and 6 cyclically permutes the digits. 142857 x 1 = 14...
Tuesday, December 30, 2014

JMO - application of addition, subtraction and multiplication

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Your are given that 12345 x 33 = 407385 Use this information, and the concept of addition, subtraction, multiplication and division to arr...
Monday, December 29, 2014

factors and number

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If the sum of the factors of a number is 124. What is the number?
Tuesday, December 23, 2014

JMO, numbers

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Monday, November 24, 2014

divisibility, numbers

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Let n be the total number of different 5 digit numbers that are divisible by 4. The digits comprise of 1, 2, 3, 4, 5 and 6. No digit is rep...