Question
I. x ² – 10x + 21 = 0 II. y ² – 8y + 15 =
0 In the following question two equations numbered I and II are given. You have to solve both the equations and give answers:Solution
x ² – 10x + 21 = 0 x ² – 7x – 3x + 21 = 0 (x-7) × (x-3) X = 7,3 y² – 8y + 15 = 0 y² –5y – 3y + 15 = 0 (y-5) × (y-3) = 0 Y = 5, 3 Comparing the values of x and y we conclude that the value of y lies between the value of x. S0, relation can’t be determined
In a certain code of language, ‘+’ represents ‘×’, ‘-‘represents ‘+’, ‘×’ represents ‘÷’ and ‘÷’ represents ‘-‘. Wh...
If '+' means 'subtraction', ' X ' means 'addition', '-' means 'division' and '÷' means 'multiplication', then what is the value of the following expres...
If “+” means “minus”, “×” means “divided by”, “÷” means “plus”, and “-“ means then “multiplied by”
250 × 10 �...
Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.
168 * 8 * 7 * 34 * 94 = 256
Select the correct combination of mathematical signs that can sequentially replace the sign * and make the equation correct.
3 * 12 * 4 * 5 * 4 * 116
Monthly income of A is Rs. 6000 and he saves 25% of his monthly income. If monthly expenditure of A is decreased by 35% while his monthly savings is inc...
Select the correct combination of mathematical signs that can sequentially replace the “@” sign and balance the following equation.
14@6@8@3@...
Which of the following interchange of numbers and mathematical signs would make the given equation correct?
72 ÷ 8 × 9 − 36 + 20 = 80
Read the directions carefully and answer the following questions.
If ' + ' means '-', ' × ' means '+', ' - ' means '÷', and ' ÷ ' means '×'...
Select the combination of numbers that when placed sequentially in the blanks of the given series will complete the series.
r s _ u _ w x _ z _ s...