Which of the following is an acute angle?

Q. The following frequency distribution gives the monthly consumption of electricity of $70$ consumers of a locality.

Monthly Consumption(Units)	No. of Consumers
$65-85$	$04$
$85-105$	$05$
$105-125$	$13$
$125-145$	$22$
$145-165$	$14$
$265-185$	$08$
$185-205$	$04$

Find its mean and median.

Q. Which of the following is correct?
1. The sum of two acute angles is always an obtuse angle
2. The difference between an obtuse angle and a right angle is an acute angle
3. The sum of two acute angles can be acute, right or an obtuse angle

Q. Which of the following is an acute disease?

Q. Classify following triangle into acute, obtuse, right triangle:
In $△ABC,\angle A={25}^o,\angle B={50}^o,\angle C={105}^o$.