Advertisements
Advertisements
Question
Evaluate: 372 – 362
Advertisements
Solution
372 – 362
Using property, for any natural number n,
(n + 1)2 – n2 = (n + 1) + n
⇒ (36 + 1)2 – 362 = (36 + 1) + 36
⇒ 372 – 362 = 37 + 36
⇒ 372 – 362 = 73
APPEARS IN
RELATED QUESTIONS
What will be the unit digit of the square of the following number?
26387
The following number are obviously not perfect square. Give reason.
7928
The following number are obviously not perfect square. Give reason.
222000
The square of which of the following number would be an odd number?
42008
The area of a square field is 60025 m2. A man cycles along its boundary at 18 km/hr. In how much time will he return at the starting point?
Without doing the actual addition, find the sum of:
1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 + 23
Without doing the actual addition, find the sum of:
1 + 3 + 5 + 7 + 9 + ……………… + 39 + 41.
Find the length of a room whose area is `153/10` sq.m and whose breadth is `2 11/20` m
There is no square number between 50 and 60.
A number having 7 at its ones place will have 3 at the units place of its square.
