Advertisements
Advertisements
प्रश्न
Without doing the actual addition, find the sum of:
1 + 3 + 5 + 7 + 9 + ……………… + 39 + 41.
Advertisements
उत्तर
1+3 + 5 + 7 + 9 + ……….. + 39 + 41
= Sum of first 21 odd natural numbers = 212 = 441
APPEARS IN
संबंधित प्रश्न
What will be the unit digit of the square of the given number?
1234
The following number are obviously not perfect square. Give reason.
7928
Find the least number which must be subtracted from the following numbers to make them a perfect square:
2361
Find the least number which must be added to the following numbers to make them a perfect square:
5607
Find the greatest number of 5 digits which is a perfect square.
A General arranges his soldiers in rows to form a perfect square. He finds that in doing so, 60 soldiers are left out. If the total number of soldiers be 8160, find the number of soldiers in each row.
Find the value of:
\[\frac{\sqrt{80}}{\sqrt{405}}\]
225 square shaped mosaic tiles, area 1 square decimeter exactly cover a square shaped verandah. How long is each side of the square shaped verandah?
A number ending in 9 will have the units place of its square as ______.
There is no square number between 50 and 60.
