Advertisements
Advertisements
प्रश्न
Write five numbers which you cannot decide whether they are square just by looking at the unit's digit.
उत्तर
A number whose unit digit is 2, 3, 7 or 8 cannot be a perfect square.
On the other hand, a number whose unit digit is 1, 4, 5, 6, 9 or 0 might be a perfect square although we have to verify that.
Applying these two conditions, we cannot determine whether the following numbers are squares just by looking at their unit digits:
1111, 1001, 1555, 1666 and 1999
APPEARS IN
संबंधित प्रश्न
Find the square root of the following number by the prime factorisation method.
7744
For the following number, find the smallest whole number by which it should be divided so as to get a perfect square number. Also find the square root of the square number so obtained.
2925
Find the smallest square number that is divisible by each of the numbers 8, 15, and 20.
Find the square root the following by prime factorization.
8281
Write the prime factorization of the following number and hence find their square root.
7744
The students of class VIII of a school donated Rs 2401 for PM's National Relief Fund. Each student donated as many rupees as the number of students in the class. Find the number of students in the class.
If `root(3)(1906624) xx sqrt(x)` = 3100, find x
A square board has an area of 144 square units. How long is each side of the board?
Using prime factorisation, find which of the following are perfect squares.
729
