# New post in Combinations

## How many combinations out of 3 elements?

December 31st, 2022

## A batsman can score 0,1,2,3,4 or 6 runs from a ball. the number of different sequences...

August 18th, 2022

## How many three-digit numbers formed from the six digits $2$, $3$, $5$, $6$, $7$, and $9$ without repetition are multiples of 5?

December 16th, 2022

## A computer password consists of a letter followed by 3 or 4 numbers. Find the total number of passwords that can be created.

October 25th, 2022

## Could you please solve this problem?

August 15th, 2022

## How many rectangles can be observed in the grid?

August 15th, 2022

July 22nd, 2022

August 1st, 2022

## Number of ways for 7 people to be seated so that two particular ones are separated by 3

October 2nd, 2022

August 1st, 2022

August 1st, 2022

## Show that $(1+x)^n$ = .... Hence deduce that .... = $2^n$

August 21st, 2020

August 1st, 2022

## How often does 7 occur from number 1 to 1000?

January 2nd, 2020

## how many 3 digit numbers can be formed with 2 consecutive same numbers

December 28th, 2020

August 1st, 2022

## For how many natural numbers $a$ is the expression $\sqrt{\frac{a+64}{a-64}}$ also a natural number?

December 10th, 2020

## Statistics Probability breathalyser test questions

January 31st, 2020

April 15th, 2020

August 1st, 2022

July 27th, 2020

August 1st, 2022

July 22nd, 2020

June 4th, 2020

## Calculating the expected profit with Probability A level maths CIE

November 3rd, 2020

## Dealing a 5 card hand with exactly 1 pair

November 15th, 2020

March 11th, 2020

July 8th, 2020

August 1st, 2022

August 1st, 2022