Click to attempt the test
testwithresult
5. Given that the sum of the odd integers from 1 to 99 inclusive is 2500, what is the sum of the even integers from 2 to 100 inclusive?
Explanation for Question 1
If an object travels at five feet per second, how many feet does it travel in one hour?
If an object travels at 5 feet per second
it covers 5x60 feet in one minute,
and 5x60x60 feet in one hour.
Answer = 18000
If an object travels at five feet per second, how many feet does it travel in one hour?
If an object travels at 5 feet per second
it covers 5x60 feet in one minute,
and 5x60x60 feet in one hour.
Answer = 18000
Explanation for Question 2
if the given series is in arithmetic progression then average=(first-term + last-term)/2
The series is: 10,20,30.....190
The average is (10+ 190)/2
answer=100
if the given series is in arithmetic progression then average=(first-term + last-term)/2
The series is: 10,20,30.....190
The average is (10+ 190)/2
answer=100
Explanation for Question 3
Let x be the side of the cube then volume=x3
if side double i.e 2x the volume = (2x)3
given the volume x3 weighs 6 pounds
then 8x3weighs (8)(6)pounds
answer=48
Let x be the side of the cube then volume=x3
if side double i.e 2x the volume = (2x)3
given the volume x3 weighs 6 pounds
then 8x3weighs (8)(6)pounds
answer=48
Explanation for Question 4
the information given in the question is
(25%(600) = 15% n
25 x (600/15) = n
n = 1000
the information given in the question is
(25%(600) = 15% n
25 x (600/15) = n
n = 1000
Explanation for Question 5
sum of the terms of arithmetic progression is
(first term + last term)n/2,where 'n' is number of terms.
From the question
n=50 (all even numbers from 2 to 100)
first term=2
last term=100
substitute in the above formula: (2 + 100)50/2
ans= 2550
sum of the terms of arithmetic progression is
(first term + last term)n/2,where 'n' is number of terms.
From the question
n=50 (all even numbers from 2 to 100)
first term=2
last term=100
substitute in the above formula: (2 + 100)50/2
ans= 2550