How many different two digit numbers can you make out of 4, 1, 1 and 9?

How many different two digit numbers can you make out of 4, 1, 1 and 9?

what is the next number in the following sequence : 7,16,8,27,9, ?

y = 2x + 1 Y = -4x + 7

If T1=1, T2= 2, & Tn= Tn-1+Tn-2 for all n>2, find the remainder when T21 is divided by 6 ??

2 answers

A boat can travel 24 mph in still water. If it travels 186 miles with the current in the same length of time it travels 102 miles against the current, what is the speed of the current?

The numbers 23331 and 4291 are divisible by 7. Show that the number 19040 is also divisible by 7 without actual division

The numbers 840 and 876 are divisible by 6. Without actual division can you show the 1716 is also divisible by 6?

If x is a positive integer what is the units digit of (24)5+2x (36)6 (17)3?

The first three common multiples of some numbers are 18,36 and 54. Write the next three common multiples of these numbers.

Find the reciprocal 1. {(-1/10)-3}-2 2. (-8/11)-5 ÷ {(-8/11)2}3

The sum of the digits in the odd places from the right of a number is 11. What may be the sum of the digits in the even places of the number?

find the smallest number which when divided by 18 and 24 will have a remainder of 4 and 10 respectively.

-24 x 4=

I'm a little confused with this problem, If 21 more than 3 times a number is -15, what is the number?

if √n is an irrational number, which of the following must be irrational ? a. √n^2 b. 2√n c. √n/2 d. √2n

One of the miltiples of two co prime numbers is 20 less than 100 and the next is 20 more than 100. Find the co prime numbers.

If a and b are positive integers and 24ab is a perfect square, then which of the following cannot be possible? 1. Both a and b are odd 2. ab is a perfect square 3. Both a and...

The sum of two numbers is 159 ,while the difference of the two numbers is 21. What are the two numbers?

if z=a*b*c where a,b, c are consecutive integers in that order, and a is an even number. Which of the following must also be an integer. 1. z/3 2.z/4 3.z/8 a. 1 only b...