Peter Phipps's user avatar
Peter Phipps's user avatar
Peter Phipps's user avatar
Peter Phipps
  • Member for 12 years
  • Last seen this week
  • Worcester, UK
1 vote

prove that $2^{3n}\equiv 1$ (mod 7) for every integer $n>0$

1 vote

Karatsuba multiplication for $x = 123 , y = 100$

1 vote

The difference between 3 digit number and reversing its digit is always divisible by

1 vote

Probability that my roll on a die will be higher than yours: Why divide by 6?

1 vote

Parsing absolute value signs: Does $|x|x|x| =|x|\cdot x \cdot |x|$ or $ {\large|} x\cdot |x| \cdot x{ \large |}$?

1 vote

Where to stop when doing decimal division?

1 vote

Calculator contradicting true statement

1 vote
Accepted

If $k$ is the greatest integer such that $k < \sqrt{n+2}$ and $k|n$, prove that $n$ is a perfect square

0 votes

What does $x=\sum 2^{8(n-i)}x_i$ mean in words?

0 votes
Accepted

Common Root in Quadratic Equation

0 votes

Checking a binary number is OK

0 votes

An interesting sequence,Look and say sequnce

0 votes

How to desgin a fair raffle

0 votes

What is the principal root of $\sqrt{-i}$?

0 votes

For rational numbers $a, b$, what is the range of $b$ such that $\lceil a + b \rfloor = \lceil a \rfloor$ holds?

0 votes

find out the fractional part for $\sqrt{25} + \sqrt{24}$

0 votes

In how many ways can the students answer a 10-question true false examination?

0 votes
Accepted

How can I know the two functions of the following lines?

-1 votes

Finding a number when its remainder is given.

-1 votes
Accepted

Given a natural number $n< 10^{9},$ find the maximum number of the multiple of $3,$ which differs by exactly one digit from the given one

-1 votes
Accepted

Mixture and Alligation question:

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