In a quiz, positive marks are given for correct answers and nagative marks are given for incorrect answers. If Jack's scores in five successive rounds were 25,-5,-10,15 and 10. What was his total at the end?

In a class test (+3) marks are given for every correct answer and (-2) marks are given for every incorrect answer and no marks for not attemption any question:- Mohini scores -5 marks in this test, though she has got 7 correct answers. How many questions has she attempted incorrectly?

In a class test (+3) marks are given for every correct answer and (-2) marks are given for every incorrect answer and no marks for not attemption any question:- Radhika scored 20 marks. If she has got 12 correct answers, how many questions has she attempted incorrectly?

In a class test containing 10 question, 5 marks are awarded for every correct answer and (-2) marks are awarded for every incorrect answer and 0 for questins not attempted.:- Reshma gets five correct answers and five incorrect answers. What is her score?

In a class test containing 10 question, 5 marks are awarded for every correct answer and (-2) marks are awarded for every incorrect answer and 0 for questins not attempted.:- Heena gets two correct and five incorrect answer out of seven questions she attempts. What is her score?

In a class test containing 10 question, 5 marks are awarded for every correct answer and (-2) marks are awarded for every incorrect answer and 0 for questins not attempted.:- Mohan gets four correct and six incrorrect answers. What his has score.

Form the pair of linaer equations in the following problems and find their solutions (if they exist) by any algebraic method : Yash scored 40 marks in a test, getting 3 marks for each right answer and losing 1 mark for each wrong answer. Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer, then Yash would have scored 50 marks. How many questions were there in the test ?

Form the pair of linear equations in the following problems and their solutions (if they exist) by any algebraic method. Yash scored 40 marks in a test, getting 3 marks for each right answer and losing 1 mark for each wrong answer. Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer, then Yash would have scored 50 marks. How many questions were there in the test?

Form the pair of linear equations in the following problems and find their solutions (if they exist) by any algebraic method : Yash scored 40 marks in test, getting 3 marks for each right answer and losing 1 mark for each wrong answer. Had 4 marsk been awarded for each correct answer and 2 marks been deducted for each incorrect answer, then Yash would have scored 50 marks. How many questions were there in the test ?

In a multiple choice question, there are five alternative answers of which one or more than one are correct. A candidate will get marks on the question, if he ticks all the correct answers. If he decides to tick answer all random, then the least number of choices should he be allowed, so that the probability of his getting marks on the question exceeds (1)/(8) is

Different types of excretory structures and animals are given below. Match them appro- priately and mark the correct answer from among those given below