Related Questions

নিচের কোনটি ইলেক্ট্রনাকর্ষি(electrophile)?
A NO2+
B Cl-
C OS-
D NH3
A,B,C,D,E,G and I are seven friends who study in three different standards namely 5th, 6th and 7th such that not less than two friends study in the same standard. Each friend also has a different favorite subject namely History, Civics, English, Bangla, Science , Maths , and Economics but not necessarily in the same order. A likes Maths and studies in the 5th standard with only one other friend who likes Bangla. I studies with tow other friends . Both the friends who study with I like languages (Here languages include only Science , English and Bangla ) . D studies in the 6th standard with only one person and does not like Civics . E studies with only one friend . The one who likes history does not study in 5th or 6th standard . E does not like languages. C does not like English , Science or Civics. Which combination represents E's favorite subject and the standard in which he studies?
A Civics and 7th
B Economics and 5th
C Civics and 6th
D History and 7th
P,Q,R and S are four men , p is the oldest but not the poorest. R is the richest but not the oldest. Q is older than S but not than P or R, P is richer than Q but not than S .The four men can be ordered descending in respectof age and richness respectively, as
A PQRS ,RPSQ
B PRQS, RSPQ
C PRQS, RSQP
D PRSQ, RSPQ
Khan observes that if flight 409 is cancelled, then the manager could not possible arrive in the time for the meeting . But the flight was not cancelled. Therefore, Khan concludes, the manager will certainly be on time . Halima replies that even if Khan's premises are true, his argument is fallacious. And therefore, she adds, the manager will not arrive on time after all. Which of the following is the strongest thing that we can properly say about this discussion ?
A Halima is mistaken in thinking Khan's argument to be fallacious, and so her own conclusion is unwarranted.
B Halima is right about Khan's argument, but nevertheless her own conclusion is unwarranted
C Since Halima is mistaken about Khan's argument , her own conclusion must be false.
D Halima is right about Khan's argument, but nevertheless her own conclusion is false
150 individuals attended a marathon held in Sylhet. Of those only If x of the 150 individuals were from sythet and z of the individuals participated in the marathon but were not from sylhet. Which of the following represents the number of individuals who did not participated in the marathon and were not from sylhet?
A 150 -x+z
B 150 -x-y+z
C 150-x+z
D 150-x-z
Ralph likes 25 but not 24; he likes 400 but not 300; he likes 144 but not 145.Which does he likw-
A 10
B 50
C 200
D 1600
Ralph likes 25 but not 24 , he likes 400 but not 300 , he likes 144 but not 145. which does he lide;
A 10
B 50
C 200
D 1600
Laura loves to eat apple but not the banana while John Loves to eat mango and the banana. Kim loves to eat mongo but not the apple and Jim loves eat banana but not the mango. If each child loves to eat two tree fruits, Which one has the same preference as John
A Kim
B Laura
C Jim
D all of them
In a class of 50 students, 10 did not opt for math, 15 did not opt for science and 2 did not opt for either. How many students of the class opted for both math and science?
A 37
B 27
C 23
D 25
Who is the tallest among six boys P, T, N, D, Q and R? 1. P is taller than D and N but not as tall as T. 2. R is taller than Q but not as tall as T. 3. Q is not taller than T and R.
A Only 1 and 2
B Only 2 and 3
C All 1, 2 and 3
D Only 1 and 3

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