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Start learning 50% faster. Sign in nowLet the total number of students be x Average marks obtained by the students = 40 Total marks = 40x After correcting the quantitative mistakes the average decreased by (40-25) = 15 marks Total reduction = 15 × 60 = 900 Now According to the Question, (40x-900)/x = 30 40x-900=30x x=90 Total number of students =90
The age of Manish is half of that of his mother. His mother is 9 years younger to his father, and Manish is 7 years older than his sister. The age of hi...
In a certain coding system, 'paper pencil eraser' is coded as 'sd er nm'. 'book machine paper' is coded as 'nj sd cv' and 'tool pencil machine' is coded...
If + means –, – means ×, × means ÷, and ÷ means +, then what will be the value of following expression?
13 – 3 + 15 × 3 ÷ 5 = ?
If '@' means 'addition', '%' means 'multiplication', '$' means 'division' and '#' means 'subtraction', then find the value of the following expression.<...
Select the option that is related to third letter - cluster in the same way as the second - letter cluster is related to the first letter - cluster.
...If 2 is denoted by '[', 4 is denoted by '=' , 9 is denoted by '-' and 0 is denoted by '+', what is '=[-+'?
Hemant is older than Bipin but younger than Mamta. Vinod is older than Sudhanshu. Mamta is not as old as Vinod but is older than Bipin. Sudhanshu is not...
In a certain code language, ‘PORTS’ is written as ‘88’ and ‘SWEETS’ is written as ‘188’. How will ‘MAGIC’ be written in that code la...
If ‘x’ means ‘additions’, ‘–‘ means ‘division’, ‘÷’ means ‘subtraction’ and ‘+’ means ‘multiplication’, then what wil...
If ‘−’ stands for ‘÷’, ‘+’ stands for ‘×’, ‘÷’ stands for ‘−’ and ‘×’ stands for ‘+’, then 80 − 20 + 10 ÷ 8 �...
