4. 13 and 31 is a strange pair of numbers such that their squares 169 and 961 are also mirror images of each other. Find two more such pairs.
3. A man, after a tour, finds that he had spent every day as many rupees as the number of days he had been on tour. How long did his tour last, if he had spent in all ₹ 1,296
2.Out of 745 students, maximum are to be arranged in the school field for a P.T. display, such that the number of rows is equal to the number of columns. Find the number of rows if 16 students were left out after the arrangement.
1.Which is the smallest number that must be multiplied to 77175 to make it a perfect cube?
Insert seven rational numbers between 2 and 3.
since we need seven rational numbers
multiply the given rational numbers by 8/8
thus seven rational numbers between 2 and 3 are 17/8,18/8,19/8,20/8,21/8,22/8,23/8.
Divide the sum of and by the difference of and
the sum of 5/8 and -11/8=-7/24
the difference of 3/7 and 5/14=-1/14
now divide the answers-7/24 by -1/14
-7/24 x 14/-1= 49/12
By what number should be multiplied to get 16?
the required number is 16 divided by -8/13
=16 x -13/8 = -26
write the method to synthesis of phenol?
2. Given log2 x = m and log5 y = n
(i) Express 2m-3 in terms of x
Given, log2 x = m and log5 y = n
2m = x and 5n = y
(i) Taking, 2m = x
2m/23 = x/23
2m-3 = x/8
1. If loga m = n, express an – 1 in terms in terms of a and m.
We have, loga m = n
an = m
Dividing by a on both sides, we get
an/a = m/a
an-1 = m/a