Friday

August 22, 2014

August 22, 2014

Posted by **Anonymous** on Saturday, March 30, 2013 at 12:47am.

i) B n T are never together

ii) M,A,T n H occurs at first four places

- mathematics -
**Reiny**, Saturday, March 30, 2013 at 8:12am10 letters with 4 A's , 2 H's

a) without any restrictions, number of arrangements

= 10!/(4!2!) = 75600

consider the BT as one element

so we have 9 to arrange, with 4 A's and 2 H's

= 9!/(4!2!) = 7560

number of ways with the BT apart = 75600-7560 = 68040

b) Put the MATH in the front, that leaves

6 letters to arrange, containing of 3 A's

the remaining 6 letters can be arranged in 6!/3! or 120 ways.

That answer assumes that the front MATH stays that way.

If the MATH can be further arranged, but those letters still at the front,

then the number of ways would be 4!x(120) = 2880

- mathematics -
**Gautom**, Friday, August 23, 2013 at 4:17amThe scale of a map is given as 1:2,00000. Two cities are 3 cm apart on the map. Calculate the actual distance between them.

**Related Questions**

maths - in how many ways can the letters of mahabharat be arranged so that, b ...

math - how many time I can arranged the word MAHABHARAT thatB and T never come ...

math - In how many ways can the letters of the word EIGHT be arranged using only...

maths-probabilty - find the no. of ways in which letters of the word ARRANGEMENT...

maths-probabilty - find the no. of ways in which letters of the word ARRANGEMENT...

Math- Data Management - how many ways can the letters ALABAMA be arranged: a) If...

College Math - Your small library of books consists of 6 novels, 7 mathematics ...

elementary math for teachers - The letters LACSIPE fell off a billboard. How ...

Math/ Algebra 2 - How many different ways can the letters in the word ...

Math - A license plate is to consist of two letters followed by three digits. ...