Question
The average age of a group of persons going for tour to
Shimla is 22 years. 30 new persons with an average age of 8 years join the group and their average age becomes 12 years. The number of persons initially going for tour is?Solution
Initial number of persons = x 22x + (30 x 8) = 12(x + 30) 22x - 12x = 360 - 240 10x = 120 x = 12
Which of the following property of soil is not influenced by tillage operations?
White grub in maize can be controlled byÂ
The condition where the plant is unable to produce a zygote with its own pollen is called as?
Pseudo dominance is related with
____ is a milk process that makes milk more easily digested by those with a sensitive digestive system.
Which of the following elements has not been proved to be essential for plants?
Sedges are monocot with triangular stem and parallel venation and belong to ______ family.
When fruit develops from the mere stimulus of the pollination, but without fertilization it is known as_____
If the time shown in a clock is 8:20, then what will be the clock angle made by minute and hour hands?
A Chromosome with medium position of centromere is known as
Relevant for Exams:
