find questions & answers of metals & non metals

Jake wrote a test that had 30 questions. If 12 of the questions were marked wrong, find the number of questions that were marked right. => 18 or 42 or 28 or 22..

A question paper consists of 4 questions with 2 possible answers for each. Find the total number of ways of answering all the questions. => 16 or 16 or 15 or 8..

In an examination paper there are 12 multiple choice questions, each has 4 choices. Find the number of ways of answering these 12 questions ? => 4 12 or 12 P 4 or 12 4 or 48..

William wants to survey his classmates to find out which season they liked best. Which question will help him get fair results? => Do you like the hot summer or the pleasant spring? or Do you like ice-skating? or Which season do you like best? or Do you like winter or fall?..

Jim wrote a test consists of 10 questions which is of true/false type. Find P (10 correct in 10 questions). => 1 2 1 0 or 2 1 0 or 1 or 0.5..

Linda wants to survey her classmates to find out their favorite after-school activity. Identify the question that will get her fair results. => Do you go to a sports club after school? or Do you like tutoring after school? or What do you do before school? or What is your favorit..

Make a list of all the combinations to find the number of ways of choosing 1 consonant and 2 vowels from the word QUESTION. => 16 or 32 or 24 or 48..

A kids club would construct a swimming pool for kids if the members of the club want one. Identify the question that could be asked to find out the member′s opinion. => Would you like to have a swimming pool around? or Do you like swimming? or Do you know to swim? or Do yo..

A kids club would construct a swimming pool for kids if the members of the club want one. Identify the question that could be asked to find out the members' opinion. => Would you like to have a swimming pool around? or Do you want to learn swimming? or Do you like swimming? or D..

Find the probability that a student can guess 60% or less of the answers correctly in a 40 question true false examination. => 92.27% or 13.41% or 36.59% or 86.59%..