UGC NET Math Reasoning Q36

Question

Identify the correct mathematical statements:
A. The expression $\frac{1}{5	imes6} + \frac{1}{6	imes7} + \frac{1}{7	imes8} + \dots + \frac{1}{24	imes25}$ is equal to $\frac{4}{25}$
B. Of the three numbers, second is twice the first and is also thrice of the third. If the average of three numbers is 55, then largest number is 90.
C. If $(a+b):(b+c):(c+a) = 6:7:8$ and $a+b+c=14$, then value of $c$ is 8
D. $\frac{0.2	imes0.2+0.02	imes0.02-0.4	imes0.02}{0.18}$ is equal to 0.09
Choose the correct answer from the options given below

Accepted Answer

A and B only