Advertisements
Advertisements
Question
Find the result of subtracting the sum of all integers between 20 and 30 from the sum of all integers from 20 to 30.
Advertisements
Solution
Required number
= (Sum of all integers between 20 and 30 – Integers between 20 and 30)
(20 + 21 + 22 + 23 + 24 + 25 + 26 + 27 + 28 + 29 + 30) – (21 + 22 + 23 + 24 + 25 + 26 + 27 + 28 + 29 )
⇒ 20 + 30 = 50
∴ Required number = 50
APPEARS IN
RELATED QUESTIONS
Verify: {(-15) – 8} x -6 = (-15) x (-6) – 8 x (-6)
Eighteen integers are multiplied together. What will be the sign of their product, if:
15 of them are negative and 3 are positive?
Eighteen integers are multiplied together. What will be the sign of their product, if:
12 of them are negative and 6 are positive?
Eighteen integers are multiplied together. What will be the sign of their product, if:
9 of them are positive and the remaining are negative?
Find which is greater?
(8 + 10) × 15 or 8 + 10 × 15
Find which is greater.
{(-3) - 4} × (-5) or (-3) - 4 × (-5)
The difference between an integer and -6 is -5. Find the values of x.
The sum of two integers is 28. If one integer is -45, find the other
The sum of two integers is -56. If one integer is -42, find the other.
A number changes from −20 to 30. What is the increase or decrease in the number?
