Question

1. If x is an odd number, what is the sum of next two odd numbers greater than 3x+1?
a 3x + 3 b. 6x+8
6x+6
d. 6x+5
e. 6x+4
2. The sum of four consecutive odd integers must be:
a ever, but not necessarily divisible by 4
b. divisible by 4, but not necessarily by 8
divisible by 8. but not necessarily by 16
, d. divisible by 16
e. None of the above
3. If x and y are integers, for which of the following ordered pairs (x,y), is 2x + y an odd number?
a. 0.2
b. 1,2
dr 1
d. 2,4
e. 3,0
4. The sum of five odd numbers is always:
a. even
d. a prime number
c. divisible by five
b. divisible by three
.e. None of these
5. If a is 3 less then b/2, which of the following gives b in terms of a?
a + 3
6. 2a+3
... 2(a-3)
d. 213-a)
e. 2(a+3)

Answer 1

Answer:

ok

Explanation:

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Answer 2

Answer:

1(c) Well, if x is an odd number, then 3x is also an odd number and 3x + 1 is an even number.

The next odd number after 3x +1 will be 3x +2 and the next one after that will be 3x + 4. So we have to add 3x +2 and 3x + 4 which gives 6x + 6.

4(e) E is correct. None of the first four choices is necessarily true. The sum,5+7+9+13+15=49 , is not even, divisible by , divisible by , nor prime.