How many terms are in the G.P. 3, 6, 12, 24, ......., 384 ?
Here a = 3 and r = 6/3 = 2. Let the number of terms be n. Then, t = 384 => a * r^(n-1) = 384 => 3 * 2^(n-1) = 384 => 2^(n-1) = 128 = 2^(7) => n-1 = 7 => n = 8.
Which number will fit in '?' place in the following series?
12, 23, 45, 89, ?
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Assuming that the numbers in each of the following figures follow a similar pattern, select the option that can replace the question mark (?) in figure C.
The equation of a line is given by 4y-6x+9=0. Find the slope of other line which is perpendicular to it.
What will be the 20th term in the given sequence?
-50, -47, -44, _
In the given series of numbers how many 7's are there which are immediately followed by 9 and immediately not preceeded by 5 ?
The value of 1+22+23+24+...+29 is
In an arithmetic progression if 13 is the 3rd term, -47 is the 13th term, then -17 is which term?
What is the value of (81 + 82 + 83 + ......... +130)?
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