Take one flower each of the families Fabaceae and Solanaceae and write its semi-technical description. Also draw their floral diagram after studying them.

Take one flower each of families Fabaceae and Solanaceae and write its semitechnical description. Also draw their floral diagrams after studying them.

There are 40 students in Class X of a school of whom 25 are girls and 15 are boys. The class teacher has to select one student as a class representative. She writes the name of each student on separate cards, the cards being identical. Then she puts cards in a box and stirs them thoroughly. She then draws one card from the box. What is the probability that the name written on the card is the name of (i) a girl? (ii) a boy?

Two particles start their journey at the same time from the same point following two straight lines inclined with each other at an angle theta . One moves with a uniform velocity u and other, starting from rest, moves with an acceleration a. show that the relative velocity between them will be minimum after a time u cos theta//a and its value is u sin theta .

A bag contains a white and b black balls. Two players, Aa n dB alternately draw a ball from the bag, replacing the ball each time after the draw till one of them draws a white ball and wins the game. A begins the game. If the probability of A winning the game is three times that of B , then find the ratio a : b

Draw an equilateral triangle having each side = 4.5 cm, also measure its three angles with a protractor and write their measures.