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Let the total number of students in a class be x ∴ According to the question, Number of girls = 3/5 x and number of boys = x - 3/5 x = 2/5 x Number of girls who are absent = 3/5 × 2/9 x = 6x/45 and number of boys who are absent = 2/5 × 1/4 x = x/10 ∴ Total number of students who are present = x - 6x/45 - x/10 = (90x - 12x - 9x)/90 = 69x/90 = 23x/30 ∴ The 23/30 part of the students are present in the class.
18, 19, 27, 54, 116, 243
128 384 48 144 20 54
11 9 20 18 37 36
...4 6 12 30 90 310
...11 9 20 18 37 36
...There are two wrong number series given in question and three relationships has been derived from that you have to answer the correct relationship betwe...
Find the wrong number in the given number series.
263, 133, 201, 505, 1771, 7974
6, 24, 125, 720, 5040, 40320
32, 48, 72, 108, 162, 248