The difference between `3/5t h\ of2/3r d` of a number `a n d2/5t h\ of1/4t h` of e same number is 288. What is the number? a. 850 b. 955 c. 895 d. 960

The difference between (3)/(4)th of (4)/(5)th of a number and (1)/(6) of (2)/(5) th of the same number is 648.What is the number? (a) 1110 (b) 1215 (c) 1325 (d) 1440 (e) None of these

40% of 60% of 3/5t h of a number is 504.what is 25% of 2/5 th of that number? 175 b. 180 c. 350 d. 360

If ^n P_r=720a n d^n C_r=120 ,t h e nr to a. 3 b. 4 c. 5 d. 6

Two A.P.s have the same common difference. The first term of one of these is 3, and that of the other is 8. What is the difference between their (a) 2n d terms? (b) 4t h terms? (c) 10 t h terms? (d) 30 t h terms?

If \ ^(n+1)C_3=2.\ \ ^n C_2\ t h e n= 3 b. 4 c. 6 d. 5

If the coefficients of rth, (r+1)t h ,a n d(r+2)t h terms in the expansion of (1+x)^(14) are in A.P., then r is/are a. 5 b. 11 c. 10 d. 9

If the coefficients of rth, (r+1)t h ,a n d(r+2)t h terms in the expansion of (1+x)^(14) are in A.P., then r is/are a. 5 b. 11 c. 10 d. 9

If a : b=5:7 a n d c : d=2a :3b , t h e n a c : b d is 10 : 21 b. 20 : 38 c. 50 : 147 d. 50 : 151

If the sum of n terms of an A.P., is 3n^2+5n then which of its terms is 164? a. 26 t h b. 27 t h c. 28 t h d. none of these

If the sum of n terms of an A.P., is 3n^2+5n then which of its terms is 164? a. 26 t h b. 27 t h c. 28 t h d. none of these