781: The blood pressure values of four persons are given below :
1. Mrs. X : 90/60
2. Mr. X : 160/120
3. Mr. Y : 120/80
4. Mrs. Y : 140/100
Who among the following has normal blood pressure?
(a) Mrs. X
(b) Mr. X
(c) Mrs. Y
(d) Mr. Y
782: In an office, the number of persons who take tea is twice the number of persons who take only coffee. The number of persons who take coffee is twice the number of persons who take coffee is twice the number of persons who take only tea.
Consider the following statements :
1. The sum of the number of persons who take either tea or coffee or both is four times the number of persons who take both coffee and tea.
2. The sum of the number of persons who take only coffee and those who take only tea is twice the number of persons who take both and coffee. Which of the statements given above is/ are correct?
783: Consider the following statements:
1. Adam Osborne produced the first portable computer.
2. Ian Wilmut created the first cloned sheep.
Which of the statements given above is/ are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
784: The song "Amar Sonar Bangla" written during the Swadeshi Movement of India inspired the liberation struggle of Bangladesh. Who wrote this song ?
(a) Rabindranath Tagore
(b) Mukunda Das
(c) Dwijendralal Ray
(d) Rajni Kanta Sen
785: The damage to the Spektr Module of the Russian Space Station Mir was due to
(a) collision with a Soyuz cargo ship
(b) faulty material design of the Spektr Module
(c) explosion inside the space station
(d) collision with an asteroid