Question Discussion & Solution

After reading statement and conclusions we decide that -

i) All women are scientists.→ False 

ii) All scientists are women.→ False

Hence, option 4 is the correct answer.

• Direct memory access (DMA) is a feature of computer systems that allows certain hardware subsystems to access main system memory (RAM), independent of the central processing unit (CPU)
• Disk drive is a hardware subsystem

The correct answer is Pooja Kadian.

• Pooja Kadian was the first Indian to receive the title of world champion in Wushu in 2017.

Key Points

• Pooja Kadian won the gold in women’s 75kg category.
• Pooja defeated Evgeniya Stepanova of Russia in the final.
• The event was held at Kazan in Russia.
• Praveen Kumar was the first Indian man to win a gold medal at the Wushu World Championships.
• Praveen defeated Philippines' Russel Diaz in the 48kg category. 

Additional Information

• Wushu Sanda is a martial art which combines full-contact kickboxing, including close-range punches and kicks, with wrestling, takedowns, throws, sweeps and kicks catches.

CONCEPT:

Logic Gates:

• The logic gates are used in electronic circuits that give a certain output for a given set of Inputs.
• and which is based on a certain logic. 
• Input and output are in binary form that is 1 and 0.
• It is based on certain Logic.
• Some basic logic gates are AND gate, OR gate, NOT gate. 
• To build digital logic we develop a combination of these gates. 

AND Gate

•  If both the inputs are high, it produces a high output.
• The Boolean algebra for AND gate is X = A. B
• It means that if any of the input of A and B is zero, the output will be zero.
• If both are one, the output will be one.

The correct option is AND Gate. 

Additional Information

NOT gate:  

• It inverts the input. Whatever the input is given, it changes its value at the output.
• The Boolean algebra for NOT gate is X = X̅

Given series U, R, O, L, I, ?

We subtract 3 in each letter we get-

Hence, "F" is the correct answer.