Std 8 maths ch 8 || ભાગ=૧|| standard 8 maths ch 8 in gujarati || Class 8 maths ch 8 || Child Guruji

If +8 means 8 units forward, then -8 means 8 units

8 + (-8) = ?

8 cot^2A-8 cosec^2A is equal to a) 8 b) 1/8 c) -8 d) - 1/8

There are 8 math's books and 6 science books in a almirah. In how many wayscan 4 books of each subject be selected?

Fill in the blanks: 8 1/8-\ =7/8

In a school, students must take at least one of these subjects: Maths, Physics or Chemistry. In a group of 50 students, 7 take all three subjects. 9 take Physics and Chemistry only, 8 take Maths and Physics only and 5 take Maths and Chemistry only. Of these 50 students, x take Maths only, x take Physics only and x + 3 take Chemistry only. Draw Venn diagram, find x, and hence find the number taking Maths.

The enthalpy change of the reaction C_3H_8(g)+H_2(g) rarr C_2H_6(g)+CH_4(g) , at 25^@ , will be Given that: heat of combustion values under standard condition (The standard heat of formation of C_3H_8(g) is -103.8kJ/mol)