@ScareCrow28 said:bhai (13*12 + 27*13)/(40*39) hoga na..
maine 10A+B le kar kia
@deedeedudu said:0 No is 140
nai bhai...lagta hai gazab ka hangover ho rah hai aaj..
..thodi aur chalegi..
..thodi aur chalegi..@grkkrg said:Two distinct A and B are selected from set {1,2,3,4....39,40}. Find the probability that AB is divisible by 3.
(13*12+27*13) / 40P2
@grkkrg said:Two distinct A and B are selected from set {1,2,3,4....39,40}. Find the probability that AB is divisible by 3.
OA 0.55
@grkkrg said:Two distinct A and B are selected from set {1,2,3,4....39,40}. Find the probability that AB is divisible by 3.
A*B is divisible by 3=> Either A/B or both are divisible by 3
=> (13C2 + 13C1*27C1)/40C2 = (13*6 + 13*27)/(20*39) = 33/60 = 11/20 ?
@nick_baba said:nai bhai...lagta hai gazab ka hangover ho rah hai aaj....thodi aur chalegi..
Hahaha nhi bhai pita to nhi hoon but office ka hangover hai shayad 
ABCDE is an irregular polygon such that ∠A = ∠B = ∠C = ∠D = 120° and ∠E = 60° . If AB = 6 cm, BC = 5 cm and CD = 4 cm, find the perimeter of ABCDE.
1) 35 cm 2) 37 cm 3) 29 cm 4) 31 cm 5) Can't be determined
1) 35 cm 2) 37 cm 3) 29 cm 4) 31 cm 5) Can't be determined
@grkkrg said:N = 125?100 400 144 91 N is divisible by 5144 100 100 121 Combining 121N = 125
@nick_baba said:yeps..
N should be 121 na 
In 125 last digit wont be 1
In 125 last digit wont be 1@gs4890 said:N should be 121 na In 125 last digit wont be 1
121 nhi ho skta..if unit place pe 0 he..it means its divisible by 5
@gs4890 said:N should be 121 na In 125 last digit wont be 1
bhai last nai first digit 1 hai...last digit in base 5 is 0 means no. 5 se divisible hoga..
@rkshtsurana said:121 nhi ho skta..if unit place pe 0 he..it means its divisible by 5
If 121 is expressed in decimal form & u want to convert it into base 5 to last digit 1 hoga
@nick_baba said:An integer N, 100
in base of 5 right most digit is 0, this implies that the number is a multiple of 5.
left most digit is 1 in base 8 => N
left most digit is 1 in base 11 => N >= 1*11^2 + 0*11+0 = 121
based on the 3 conditions above we can say N = 125
=>remainder when 125 divided by 7 is 6
ATDH.
@rkshtsurana said:ABCDE is an irregular polygon such that ∠A = ∠B = ∠C = ∠D = 120° and ∠E = 60° . If AB = 6 cm, BC = 5 cm and CD = 4 cm, find the perimeter of ABCDE.1) 35 cm 2) 37 cm 3) 29 cm 4) 31 cm 5) Can't be determined
35
@nick_baba said:bhai last nai first digit 1 hai...last digit in base 5 is 0 means no. 5 se divisible hoga..
@rkshtsurana said:121 nhi ho skta..if unit place pe 0 he..it means its divisible by 5
An integer N, 100 When N is expressed in base 8 notation and in base 11 notation, the leading (i.e., leftmost) digit is 1 in both cases. Then N when divided by 7 gives a remainder of ??
rightmost he to pucha hain to last hua na & not leading
rightmost he to pucha hain to last hua na & not leading
@gs4890 said:If 121 is expressed in decimal form & u want to convert it into base 5 to last digit 1 hoga
ha but ques me base 5 k liye 0 diya he..rightmost