What is the missing letter in the series of D H L R ---?
What is the missing letter in the series of D H L R ---? Correct Answer X
The letters are arraned this way :<math xmlns = "http://www.w3.org/1998/Math/MathML"><mi>A</mi><mi>B</mi><mi>C</mi><mo>→</mo><mi>D</mi><mo>,</mo><mo> </mo><mi>E</mi><mi>F</mi><mi>G</mi><mo>→</mo><mi>H</mi><mo>,</mo><mo> </mo><mi>I</mi><mi>J</mi><mi>K</mi><mo>→</mo><mi>L</mi></math><math xmlns = "http://www.w3.org/1998/Math/MathML"><mi>M</mi><mi>N</mi><mi>O</mi><mi>P</mi><mi>Q</mi><mo>→</mo><mi>R</mi><mo>,</mo><mo> </mo><mo>∴</mo><mo> </mo><mi>S</mi><mi>T</mi><mi>U</mi><mi>V</mi><mi>W</mi><mo>→</mo><mi>X</mi></math>