A. 0
B. 2
C. 6
D. 8
How many number are there in range of 10 to 106 such that their digit sum is 18 ? For ex. 99000, 9072, 90027, 66006.. .
Find the number of ordered pair of positive integers (a.n) such that an+1 − (a + 1)n = 2001
11.6 +9.280.464 – 0.2828 + 0.07 - ?
Mohan is a carpenter who specialises in making chairs. For every assignment he undertakes, he charges his commission and cost.His commission is fixed and equals Rs.560 per assignment while the cost equals Rs.2n² where n is the total number of chairs he makes. If for a certain assignment the average cost per chair is not more than Rs.68 then the minimum and maximum possible number of chairs in the assignment are, respectively.
(?)2+ (123)2 = (246)2 - (99)2- 2462
(3)8 X (3)4 = ?
A printer numbers the pages of a book starting with 1 and uses 3189 digits in all. How many pages does the book have ?
The L.C.M of 3, 2.7 and 0.09 is:
1201.964 – (0.121 x 0.231 x 0.191) =?
If there are 10 positive real number n1 < n2 < n3 ... < n10. How many triplets of these numbers (n1, n2, n3), (n2, n3, n4), .... can be generated such that in each triplet the first number is always less than the second number, and the second number is always less than the third number?
0.464 – 0.2828 + 0.07 - ?